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    <title>The Fetal Frontier</title>
    <link>https://rauscha.github.io/Dialog-podcast</link>
    <description>A weekly peer-level digest of the most important new research in fetal and prenatal diagnosis and therapy, with Juno and Caspar.</description>
    <language>en</language>
    <itunes:author>Juno &amp; Caspar</itunes:author>
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      <itunes:name>Juno &amp; Caspar</itunes:name>
      <itunes:email>podcast@andrewrausch.com</itunes:email>
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      <title>When Sequencing Beats the Microarray</title>
      <description><![CDATA[Sequencing after a negative CMA in a structurally abnormal fetus. As of this week you have a pooled number: twenty-seven percent incremental yield. Forty percent if the phenotype pointed you there before you ordered. Lim and colleagues, *Prenatal Diagnosis*, 2026.
And that number retires one question — whether sequencing is justified. The live question now is which fetuses bypass CMA entirely and go straight to sequencing. Harder problem. This paper doesn&apos;t fully...<br><br><em>Juno, Caspar, and any guest voices are AI-generated. Episode text and audio are generated with human-directed software.</em><br><br><strong>Chapters:</strong><ol><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260603_004102_the_fetal_frontier_-_week_of_2026_06_03.mp3#t=0">0:00</a> — Cold Open: The Clinical Question That Moved</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260603_004102_the_fetal_frontier_-_week_of_2026_06_03.mp3#t=51">0:52</a> — Headline: Clinical Question and Why a Meta-Analysis Earns the Grade</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260603_004102_the_fetal_frontier_-_week_of_2026_06_03.mp3#t=103">1:43</a> — Headline: Effect Size and the Pre-Selection Gradient</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260603_004102_the_fetal_frontier_-_week_of_2026_06_03.mp3#t=154">2:35</a> — Headline: Caveats — Heterogeneity and VUS</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260603_004102_the_fetal_frontier_-_week_of_2026_06_03.mp3#t=206">3:27</a> — Headline: Practice Impact</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260603_004102_the_fetal_frontier_-_week_of_2026_06_03.mp3#t=258">4:18</a> — Round 1: Stampalija / Single-Cell Trophoblast Sequencing</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260603_004102_the_fetal_frontier_-_week_of_2026_06_03.mp3#t=309">5:10</a> — Round 2: Cruz-Martínez / Latin American FETO</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260603_004102_the_fetal_frontier_-_week_of_2026_06_03.mp3#t=361">6:02</a> — Round 3: Sileo / Early TTTS Laser</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260603_004102_the_fetal_frontier_-_week_of_2026_06_03.mp3#t=413">6:53</a> — Round 4: Kim DeLuca / cfDNA and SCA Detection</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260603_004102_the_fetal_frontier_-_week_of_2026_06_03.mp3#t=464">7:45</a> — Close: What&apos;s Still Unsettled</li></ol><br><br><strong>Follow-up links:</strong><ul><li><a href="https://doi.org/10.1002/pd.70112">Diagnostic Yield of Sequencing for Prenatal Diagnosis of Fetal Structural Anomalies: An Updated Systematic Review</a> - Provides pooled evidence for sequencing yield over CMA in structurally abnormal fetuses, directly informing when to offer exome or genome sequencing</li><li><a href="https://doi.org/10.1002/uog.70201">Single-cell-based non-invasive screening for fetal pathogenic microimbalances using maternal blood</a> - Demonstrates that single-cell trophoblast sequencing can detect submicroscopic CNVs non-invasively, potentially reducing need for amniocentesis</li><li><a href="https://doi.org/10.1002/pd.70175">Latin American Multicenter Study of Fetal Endoscopic Tracheal Occlusion for Severe Left Diaphragmatic Hernia</a> - Largest Latin American FETO dataset confirms survival benefit and extends outcome benchmarks beyond European and North American centers</li><li><a href="https://doi.org/10.1002/uog.70196">Perinatal outcomes of twin pregnancies complicated by early twin-to-twin transfusion syndrome treated with fetoscopic laser surgery</a> - Largest early-TTTS laser series provides stage-specific survival data for counseling families facing intervention before 18 weeks</li><li><a href="https://doi.org/10.1002/pd.70190">Impact of Prenatal Cell-Free DNA Screening on Sex Chromosome Aneuploidy Diagnoses in Infants and Children</a> - Population-level evidence that cfDNA screening has shifted SCA detection earlier, changing the timing and burden of counseling and subspecialty referral</li></ul><br><br><strong>Sources:</strong><ul><li>Lim et al. - Prenat Diagn - 2026 - Diagnostic Yield of Sequencing for Prenatal Diagnosis of Fetal Structural Anomalies: An Updated Systematic Review (https://doi.org/10.1002/pd.70112)</li><li>Stampalija et al. - Ultrasound Obstet Gynecol - 2026 - Single-cell-based non-invasive screening for fetal pathogenic microimbalances using maternal blood (https://doi.org/10.1002/uog.70201)</li><li>Cruz-Martínez et al. - Prenat Diagn - 2026 - Latin American Multicenter Study of Fetal Endoscopic Tracheal Occlusion for Severe Left Diaphragmatic Hernia (https://doi.org/10.1002/pd.70175)</li><li>Sileo et al. - Ultrasound Obstet Gynecol - 2026 - Perinatal outcomes of twin pregnancies complicated by early twin-to-twin transfusion syndrome treated with fetoscopic laser surgery (https://doi.org/10.1002/uog.70196)</li><li>Kim DeLuca - Prenat Diagn - 2026 - Impact of Prenatal Cell-Free DNA Screening on Sex Chromosome Aneuploidy Diagnoses in Infants and Children (https://doi.org/10.1002/pd.70190)</li></ul><br><em>Original synthetic theme music generated locally for this episode.</em><br><br><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260603_004102_the_fetal_frontier_-_week_of_2026_06_03.companion.json">Episode companion data</a>]]></description>
      <content:encoded><![CDATA[Sequencing after a negative CMA in a structurally abnormal fetus. As of this week you have a pooled number: twenty-seven percent incremental yield. Forty percent if the phenotype pointed you there before you ordered. Lim and colleagues, *Prenatal Diagnosis*, 2026.
And that number retires one question — whether sequencing is justified. The live question now is which fetuses bypass CMA entirely and go straight to sequencing. Harder problem. This paper doesn&apos;t fully...<br><br><em>Juno, Caspar, and any guest voices are AI-generated. Episode text and audio are generated with human-directed software.</em><br><br><strong>Chapters:</strong><ol><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260603_004102_the_fetal_frontier_-_week_of_2026_06_03.mp3#t=0">0:00</a> — Cold Open: The Clinical Question That Moved</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260603_004102_the_fetal_frontier_-_week_of_2026_06_03.mp3#t=51">0:52</a> — Headline: Clinical Question and Why a Meta-Analysis Earns the Grade</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260603_004102_the_fetal_frontier_-_week_of_2026_06_03.mp3#t=103">1:43</a> — Headline: Effect Size and the Pre-Selection Gradient</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260603_004102_the_fetal_frontier_-_week_of_2026_06_03.mp3#t=154">2:35</a> — Headline: Caveats — Heterogeneity and VUS</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260603_004102_the_fetal_frontier_-_week_of_2026_06_03.mp3#t=206">3:27</a> — Headline: Practice Impact</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260603_004102_the_fetal_frontier_-_week_of_2026_06_03.mp3#t=258">4:18</a> — Round 1: Stampalija / Single-Cell Trophoblast Sequencing</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260603_004102_the_fetal_frontier_-_week_of_2026_06_03.mp3#t=309">5:10</a> — Round 2: Cruz-Martínez / Latin American FETO</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260603_004102_the_fetal_frontier_-_week_of_2026_06_03.mp3#t=361">6:02</a> — Round 3: Sileo / Early TTTS Laser</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260603_004102_the_fetal_frontier_-_week_of_2026_06_03.mp3#t=413">6:53</a> — Round 4: Kim DeLuca / cfDNA and SCA Detection</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260603_004102_the_fetal_frontier_-_week_of_2026_06_03.mp3#t=464">7:45</a> — Close: What&apos;s Still Unsettled</li></ol><br><br><strong>Follow-up links:</strong><ul><li><a href="https://doi.org/10.1002/pd.70112">Diagnostic Yield of Sequencing for Prenatal Diagnosis of Fetal Structural Anomalies: An Updated Systematic Review</a> - Provides pooled evidence for sequencing yield over CMA in structurally abnormal fetuses, directly informing when to offer exome or genome sequencing</li><li><a href="https://doi.org/10.1002/uog.70201">Single-cell-based non-invasive screening for fetal pathogenic microimbalances using maternal blood</a> - Demonstrates that single-cell trophoblast sequencing can detect submicroscopic CNVs non-invasively, potentially reducing need for amniocentesis</li><li><a href="https://doi.org/10.1002/pd.70175">Latin American Multicenter Study of Fetal Endoscopic Tracheal Occlusion for Severe Left Diaphragmatic Hernia</a> - Largest Latin American FETO dataset confirms survival benefit and extends outcome benchmarks beyond European and North American centers</li><li><a href="https://doi.org/10.1002/uog.70196">Perinatal outcomes of twin pregnancies complicated by early twin-to-twin transfusion syndrome treated with fetoscopic laser surgery</a> - Largest early-TTTS laser series provides stage-specific survival data for counseling families facing intervention before 18 weeks</li><li><a href="https://doi.org/10.1002/pd.70190">Impact of Prenatal Cell-Free DNA Screening on Sex Chromosome Aneuploidy Diagnoses in Infants and Children</a> - Population-level evidence that cfDNA screening has shifted SCA detection earlier, changing the timing and burden of counseling and subspecialty referral</li></ul><br><br><strong>Sources:</strong><ul><li>Lim et al. - Prenat Diagn - 2026 - Diagnostic Yield of Sequencing for Prenatal Diagnosis of Fetal Structural Anomalies: An Updated Systematic Review (https://doi.org/10.1002/pd.70112)</li><li>Stampalija et al. - Ultrasound Obstet Gynecol - 2026 - Single-cell-based non-invasive screening for fetal pathogenic microimbalances using maternal blood (https://doi.org/10.1002/uog.70201)</li><li>Cruz-Martínez et al. - Prenat Diagn - 2026 - Latin American Multicenter Study of Fetal Endoscopic Tracheal Occlusion for Severe Left Diaphragmatic Hernia (https://doi.org/10.1002/pd.70175)</li><li>Sileo et al. - Ultrasound Obstet Gynecol - 2026 - Perinatal outcomes of twin pregnancies complicated by early twin-to-twin transfusion syndrome treated with fetoscopic laser surgery (https://doi.org/10.1002/uog.70196)</li><li>Kim DeLuca - Prenat Diagn - 2026 - Impact of Prenatal Cell-Free DNA Screening on Sex Chromosome Aneuploidy Diagnoses in Infants and Children (https://doi.org/10.1002/pd.70190)</li></ul><br><em>Original synthetic theme music generated locally for this episode.</em><br><br><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260603_004102_the_fetal_frontier_-_week_of_2026_06_03.companion.json">Episode companion data</a>]]></content:encoded>
      <pubDate>Wed, 03 Jun 2026 05:49:27 +0000</pubDate>
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      <title>When Valacyclovir Changed a Population</title>
      <description><![CDATA[The Coste-Mazeau cohort is out this week. First national-scale evidence that the 2020 valacyclovir RCT didn&apos;t just change prescribing — vertical transmission rates fell as screening uptake and treatment adoption rose together. That&apos;s the headline.
The clean read is: RCT worked, practice followed, outcomes improved.
The implementation signal is real. The causal attribution is not clean. Both matter.
Right. Full paper.
CASPAR [anch...<br><br><em>Juno, Caspar, and any guest voices are AI-generated. Episode text and audio are generated with human-directed software.</em><br><br><strong>Chapters:</strong><ol><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260610_050200_the_fetal_frontier_-_week_of_2026_06_10.mp3#t=0">0:00</a> — Cold Open: What Changed</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260610_050200_the_fetal_frontier_-_week_of_2026_06_10.mp3#t=47">0:47</a> — Headline: Design and Population</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260610_050200_the_fetal_frontier_-_week_of_2026_06_10.mp3#t=94">1:35</a> — Headline: Effect, Numbers, and the Transmission Signal</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260610_050200_the_fetal_frontier_-_week_of_2026_06_10.mp3#t=142">2:22</a> — Headline: Practice Impact and the Screening Policy Question</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260610_050200_the_fetal_frontier_-_week_of_2026_06_10.mp3#t=189">3:09</a> — Round 1: Kjaer / FMF PE Algorithm by Conception Mode</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260610_050200_the_fetal_frontier_-_week_of_2026_06_10.mp3#t=236">3:57</a> — Round 2: Sorrenti / ISUOG vs. Delphi in MCDA sFGR</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260610_050200_the_fetal_frontier_-_week_of_2026_06_10.mp3#t=284">4:44</a> — Round 3: Schenone / IUT for Tumor-Related Fetal Anemia</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260610_050200_the_fetal_frontier_-_week_of_2026_06_10.mp3#t=331">5:31</a> — Round 4: Cai / Rhabdomyoma, MRI + Trio-WES, TSC Prediction</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260610_050200_the_fetal_frontier_-_week_of_2026_06_10.mp3#t=378">6:19</a> — Close: What to Watch, What&apos;s Unsettled</li></ol><br><br><strong>Follow-up links:</strong><ul><li><a href="https://doi.org/10.1002/uog.70223">Changing trends in prenatal screening and treatment of cytomegalovirus infection in France: 7-year national cohort study (2017-2023)</a> - First national-scale evidence that the 2020 valacyclovir RCT translated into real-world practice change and reduced vertical CMV transmission</li><li><a href="https://doi.org/10.1002/uog.70244">Predictive performance of Fetal Medicine Foundation first-trimester screening algorithm for pre-eclampsia according to conception mode</a> - Demonstrates that FMF PE screening algorithm performance varies by ART type, signaling need for mode-specific recalibration</li><li><a href="https://doi.org/10.1002/uog.70239">Perinatal outcome of monochorionic twin pregnancy complicated by selective fetal growth restriction: ISUOG vs Delphi diagnostic criteria</a> - Head-to-head comparison of sFGR criteria in MCDA twins clarifies prognostic differences and classification discordance</li><li><a href="https://doi.org/10.1002/uog.70234">Perinatal outcomes following intrauterine transfusion for fetal anemia secondary to fetal or placental tumor: systematic review</a> - Best available synthesis of IUT outcomes for tumor-related fetal anemia, guiding counseling for a rare indication</li><li><a href="https://doi.org/10.1002/uog.70240">Prenatal diagnosis of cardiac rhabdomyoma: implications for predicting tuberous sclerosis complex and guiding perinatal management</a> - Multimodal approach (MRI plus trio-WES) improves prenatal TSC prediction in fetuses with cardiac rhabdomyoma</li></ul><br><br><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260610_050200_the_fetal_frontier_-_week_of_2026_06_10.companion.json">Episode companion data</a>]]></description>
      <content:encoded><![CDATA[The Coste-Mazeau cohort is out this week. First national-scale evidence that the 2020 valacyclovir RCT didn&apos;t just change prescribing — vertical transmission rates fell as screening uptake and treatment adoption rose together. That&apos;s the headline.
The clean read is: RCT worked, practice followed, outcomes improved.
The implementation signal is real. The causal attribution is not clean. Both matter.
Right. Full paper.
CASPAR [anch...<br><br><em>Juno, Caspar, and any guest voices are AI-generated. Episode text and audio are generated with human-directed software.</em><br><br><strong>Chapters:</strong><ol><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260610_050200_the_fetal_frontier_-_week_of_2026_06_10.mp3#t=0">0:00</a> — Cold Open: What Changed</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260610_050200_the_fetal_frontier_-_week_of_2026_06_10.mp3#t=47">0:47</a> — Headline: Design and Population</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260610_050200_the_fetal_frontier_-_week_of_2026_06_10.mp3#t=94">1:35</a> — Headline: Effect, Numbers, and the Transmission Signal</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260610_050200_the_fetal_frontier_-_week_of_2026_06_10.mp3#t=142">2:22</a> — Headline: Practice Impact and the Screening Policy Question</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260610_050200_the_fetal_frontier_-_week_of_2026_06_10.mp3#t=189">3:09</a> — Round 1: Kjaer / FMF PE Algorithm by Conception Mode</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260610_050200_the_fetal_frontier_-_week_of_2026_06_10.mp3#t=236">3:57</a> — Round 2: Sorrenti / ISUOG vs. Delphi in MCDA sFGR</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260610_050200_the_fetal_frontier_-_week_of_2026_06_10.mp3#t=284">4:44</a> — Round 3: Schenone / IUT for Tumor-Related Fetal Anemia</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260610_050200_the_fetal_frontier_-_week_of_2026_06_10.mp3#t=331">5:31</a> — Round 4: Cai / Rhabdomyoma, MRI + Trio-WES, TSC Prediction</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260610_050200_the_fetal_frontier_-_week_of_2026_06_10.mp3#t=378">6:19</a> — Close: What to Watch, What&apos;s Unsettled</li></ol><br><br><strong>Follow-up links:</strong><ul><li><a href="https://doi.org/10.1002/uog.70223">Changing trends in prenatal screening and treatment of cytomegalovirus infection in France: 7-year national cohort study (2017-2023)</a> - First national-scale evidence that the 2020 valacyclovir RCT translated into real-world practice change and reduced vertical CMV transmission</li><li><a href="https://doi.org/10.1002/uog.70244">Predictive performance of Fetal Medicine Foundation first-trimester screening algorithm for pre-eclampsia according to conception mode</a> - Demonstrates that FMF PE screening algorithm performance varies by ART type, signaling need for mode-specific recalibration</li><li><a href="https://doi.org/10.1002/uog.70239">Perinatal outcome of monochorionic twin pregnancy complicated by selective fetal growth restriction: ISUOG vs Delphi diagnostic criteria</a> - Head-to-head comparison of sFGR criteria in MCDA twins clarifies prognostic differences and classification discordance</li><li><a href="https://doi.org/10.1002/uog.70234">Perinatal outcomes following intrauterine transfusion for fetal anemia secondary to fetal or placental tumor: systematic review</a> - Best available synthesis of IUT outcomes for tumor-related fetal anemia, guiding counseling for a rare indication</li><li><a href="https://doi.org/10.1002/uog.70240">Prenatal diagnosis of cardiac rhabdomyoma: implications for predicting tuberous sclerosis complex and guiding perinatal management</a> - Multimodal approach (MRI plus trio-WES) improves prenatal TSC prediction in fetuses with cardiac rhabdomyoma</li></ul><br><br><strong>Sources:</strong><ul><li>Coste-Mazeau et al. - Ultrasound Obstet Gynecol - 2026 - Changing trends in prenatal screening and treatment of cytomegalovirus infection in France: 7-year national cohort study (2017-2023) (https://doi.org/10.1002/uog.70223)</li><li>Kjaer et al. - Ultrasound Obstet Gynecol - 2026 - Predictive performance of Fetal Medicine Foundation first-trimester screening algorithm for pre-eclampsia according to conception mode (https://doi.org/10.1002/uog.70244)</li><li>Sorrenti et al. - Ultrasound Obstet Gynecol - 2026 - Perinatal outcome of monochorionic twin pregnancy complicated by selective fetal growth restriction: ISUOG vs Delphi diagnostic criteria (https://doi.org/10.1002/uog.70239)</li><li>Schenone et al. - Ultrasound Obstet Gynecol - 2026 - Perinatal outcomes following intrauterine transfusion for fetal anemia secondary to fetal or placental tumor: systematic review (https://doi.org/10.1002/uog.70234)</li><li>Cai et al. - Ultrasound Obstet Gynecol - 2026 - Prenatal diagnosis of cardiac rhabdomyoma: implications for predicting tuberous sclerosis complex and guiding perinatal management (https://doi.org/10.1002/uog.70240)</li></ul><br><em>Original synthetic theme music generated locally for this episode.</em><br><br><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260610_050200_the_fetal_frontier_-_week_of_2026_06_10.companion.json">Episode companion data</a>]]></content:encoded>
      <pubDate>Wed, 10 Jun 2026 10:09:02 +0000</pubDate>
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      <title>Oxygen Challenge, Uncertain Outcome</title>
      <description><![CDATA[Martin and colleagues, *Prenatal Diagnosis* 2026 — systematic review and single-arm meta-analysis, maternal hyperoxygenation in fetal CHD. Pooled signal: MCA pulsatility index Z-score down, pulmonary VTI up. Reproducible across studies. That&apos;s what changed this week.
And what didn&apos;t change — no outcome data. The Doppler moves. We don&apos;t know yet whether the fetus does better.
Correct. Hold that.
Walk me through what Martin actually...<br><br><em>Juno, Caspar, and any guest voices are AI-generated. Episode text and audio are generated with human-directed software.</em><br><br><strong>Chapters:</strong><ol><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260617_050144_the_fetal_frontier_-_week_of_2026_06_17.mp3#t=0">0:00</a> — Cold Open: What Changed This Week</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260617_050144_the_fetal_frontier_-_week_of_2026_06_17.mp3#t=47">0:47</a> — Headline: Why Single-Arm Is the Right Design Here</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260617_050144_the_fetal_frontier_-_week_of_2026_06_17.mp3#t=95">1:35</a> — Headline: Effect Sizes and What They Mean Clinically</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260617_050144_the_fetal_frontier_-_week_of_2026_06_17.mp3#t=142">2:22</a> — Headline: Practice Impact and the Affectionate Disagreement</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260617_050144_the_fetal_frontier_-_week_of_2026_06_17.mp3#t=190">3:10</a> — Round 1: Vergote / Open MMC Anesthesia</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260617_050144_the_fetal_frontier_-_week_of_2026_06_17.mp3#t=237">3:57</a> — Round 2: Volpe / Early Conotruncal Diagnosis</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260617_050144_the_fetal_frontier_-_week_of_2026_06_17.mp3#t=285">4:45</a> — Round 3: Giambona / Celocentesis Validation</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260617_050144_the_fetal_frontier_-_week_of_2026_06_17.mp3#t=332">5:32</a> — Round 4: Hadi / Ventricular Border Irregularities</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260617_050144_the_fetal_frontier_-_week_of_2026_06_17.mp3#t=380">6:20</a> — Close: What to Watch, What&apos;s Unsettled</li></ol><br><br><strong>Follow-up links:</strong><ul><li><a href="https://doi.org/10.1002/pd.70143">Effects of Maternal Hyperoxygenation on Fetal Hemodynamics Assessed by Ultrasound and Fetal Echocardiography in Congenital Heart Disease: A Systematic Review and Single Arm Meta-Analysis</a> - First pooled evidence quantifying the cerebrovascular and pulmonary hemodynamic response to maternal hyperoxygenation in fetal CHD</li><li><a href="https://doi.org/10.1002/uog.70237">Impact of general anesthesia with vasopressor support on uteroplacental perfusion during fetal spina bifida repair</a> - Prospective reassurance that vasopressor-supported general anesthesia does not compromise uteroplacental Doppler parameters during open fetal surgery</li><li><a href="https://doi.org/10.1002/pd.70179">Prenatal Diagnosis of Conotruncal Anomalies Before 16 Weeks: Longitudinal Evolution, Genetic Findings and Early Prognostic Markers</a> - Documents that nearly a third of early conotruncal diagnoses evolve morphologically, with early biometry potentially predicting progression</li><li><a href="https://doi.org/10.1002/pd.70184">Celocentesis for Prenatal Diagnosis of Rare Monogenic Diseases: Development, Validation, and Clinical Outcome on 876 Cases</a> - Largest validation of celocentesis, demonstrating high technical success and diagnostic accuracy for very early monogenic disease testing</li><li><a href="https://doi.org/10.1002/uog.70217">Morphological patterns of fetal lateral ventricular border irregularities: descriptive study</a> - Proposes a classification system for an underrecognized neurosonographic finding with significant genetic and infectious associations</li></ul><br><br><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260617_050144_the_fetal_frontier_-_week_of_2026_06_17.companion.json">Episode companion data</a>]]></description>
      <content:encoded><![CDATA[Martin and colleagues, *Prenatal Diagnosis* 2026 — systematic review and single-arm meta-analysis, maternal hyperoxygenation in fetal CHD. Pooled signal: MCA pulsatility index Z-score down, pulmonary VTI up. Reproducible across studies. That&apos;s what changed this week.
And what didn&apos;t change — no outcome data. The Doppler moves. We don&apos;t know yet whether the fetus does better.
Correct. Hold that.
Walk me through what Martin actually...<br><br><em>Juno, Caspar, and any guest voices are AI-generated. Episode text and audio are generated with human-directed software.</em><br><br><strong>Chapters:</strong><ol><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260617_050144_the_fetal_frontier_-_week_of_2026_06_17.mp3#t=0">0:00</a> — Cold Open: What Changed This Week</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260617_050144_the_fetal_frontier_-_week_of_2026_06_17.mp3#t=47">0:47</a> — Headline: Why Single-Arm Is the Right Design Here</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260617_050144_the_fetal_frontier_-_week_of_2026_06_17.mp3#t=95">1:35</a> — Headline: Effect Sizes and What They Mean Clinically</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260617_050144_the_fetal_frontier_-_week_of_2026_06_17.mp3#t=142">2:22</a> — Headline: Practice Impact and the Affectionate Disagreement</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260617_050144_the_fetal_frontier_-_week_of_2026_06_17.mp3#t=190">3:10</a> — Round 1: Vergote / Open MMC Anesthesia</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260617_050144_the_fetal_frontier_-_week_of_2026_06_17.mp3#t=237">3:57</a> — Round 2: Volpe / Early Conotruncal Diagnosis</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260617_050144_the_fetal_frontier_-_week_of_2026_06_17.mp3#t=285">4:45</a> — Round 3: Giambona / Celocentesis Validation</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260617_050144_the_fetal_frontier_-_week_of_2026_06_17.mp3#t=332">5:32</a> — Round 4: Hadi / Ventricular Border Irregularities</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260617_050144_the_fetal_frontier_-_week_of_2026_06_17.mp3#t=380">6:20</a> — Close: What to Watch, What&apos;s Unsettled</li></ol><br><br><strong>Follow-up links:</strong><ul><li><a href="https://doi.org/10.1002/pd.70143">Effects of Maternal Hyperoxygenation on Fetal Hemodynamics Assessed by Ultrasound and Fetal Echocardiography in Congenital Heart Disease: A Systematic Review and Single Arm Meta-Analysis</a> - First pooled evidence quantifying the cerebrovascular and pulmonary hemodynamic response to maternal hyperoxygenation in fetal CHD</li><li><a href="https://doi.org/10.1002/uog.70237">Impact of general anesthesia with vasopressor support on uteroplacental perfusion during fetal spina bifida repair</a> - Prospective reassurance that vasopressor-supported general anesthesia does not compromise uteroplacental Doppler parameters during open fetal surgery</li><li><a href="https://doi.org/10.1002/pd.70179">Prenatal Diagnosis of Conotruncal Anomalies Before 16 Weeks: Longitudinal Evolution, Genetic Findings and Early Prognostic Markers</a> - Documents that nearly a third of early conotruncal diagnoses evolve morphologically, with early biometry potentially predicting progression</li><li><a href="https://doi.org/10.1002/pd.70184">Celocentesis for Prenatal Diagnosis of Rare Monogenic Diseases: Development, Validation, and Clinical Outcome on 876 Cases</a> - Largest validation of celocentesis, demonstrating high technical success and diagnostic accuracy for very early monogenic disease testing</li><li><a href="https://doi.org/10.1002/uog.70217">Morphological patterns of fetal lateral ventricular border irregularities: descriptive study</a> - Proposes a classification system for an underrecognized neurosonographic finding with significant genetic and infectious associations</li></ul><br><br><strong>Sources:</strong><ul><li>Martin et al. - Prenatal Diagnosis - 2026 - Effects of Maternal Hyperoxygenation on Fetal Hemodynamics Assessed by Ultrasound and Fetal Echocardiography in Congenital Heart Disease: A Systematic Review and Single Arm Meta-Analysis (https://doi.org/10.1002/pd.70143)</li><li>Vergote et al. - Ultrasound in Obstetrics and Gynecology - 2026 - Impact of general anesthesia with vasopressor support on uteroplacental perfusion during fetal spina bifida repair (https://doi.org/10.1002/uog.70237)</li><li>Volpe et al. - Prenatal Diagnosis - 2026 - Prenatal Diagnosis of Conotruncal Anomalies Before 16 Weeks: Longitudinal Evolution, Genetic Findings and Early Prognostic Markers (https://doi.org/10.1002/pd.70179)</li><li>Giambona et al. - Prenatal Diagnosis - 2026 - Celocentesis for Prenatal Diagnosis of Rare Monogenic Diseases: Development, Validation, and Clinical Outcome on 876 Cases (https://doi.org/10.1002/pd.70184)</li><li>Hadi et al. - Ultrasound in Obstetrics and Gynecology - 2026 - Morphological patterns of fetal lateral ventricular border irregularities: descriptive study (https://doi.org/10.1002/uog.70217)</li></ul><br><em>Original synthetic theme music generated locally for this episode.</em><br><br><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260617_050144_the_fetal_frontier_-_week_of_2026_06_17.companion.json">Episode companion data</a>]]></content:encoded>
      <pubDate>Wed, 17 Jun 2026 10:08:41 +0000</pubDate>
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      <title>Brain Injury After Fetal Laser Surgery</title>
      <description><![CDATA[Post-FLA brain injury is a known risk. What hasn&apos;t been clear is when different injury patterns appear and how they evolve — which means centers running fetoscopic laser programs have been counseling families with imprecise language about what to watch for and when. Kunpalin changes that picture.
And if the timing matters, the surveillance protocol matters. Most centers aren&apos;t running a formalized post-FLA MRI schedule. Kunpalin gives &quot;watching&quot; a structure.
CAS...<br><br><em>Juno, Caspar, and any guest voices are AI-generated. Episode text and audio are generated with human-directed software.</em><br><br><strong>Chapters:</strong><ol><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260625_050146_the_fetal_frontier_-_week_of_2026_06_25.mp3#t=0">0:00</a> — Cold Open: The Surveillance Gap</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260625_050146_the_fetal_frontier_-_week_of_2026_06_25.mp3#t=44">0:44</a> — Headline: Clinical Question and Design</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260625_050146_the_fetal_frontier_-_week_of_2026_06_25.mp3#t=88">1:29</a> — Headline: The Temporal Arc</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260625_050146_the_fetal_frontier_-_week_of_2026_06_25.mp3#t=133">2:13</a> — Headline: Practice Implications and Counseling Language</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260625_050146_the_fetal_frontier_-_week_of_2026_06_25.mp3#t=177">2:57</a> — Round 1: Panels vs. Exomes (Swanson)</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260625_050146_the_fetal_frontier_-_week_of_2026_06_25.mp3#t=221">3:42</a> — Round 2: Maternal Sirolimus for Fetal KHE (Fraissenon)</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260625_050146_the_fetal_frontier_-_week_of_2026_06_25.mp3#t=266">4:26</a> — Round 3: FETTUS in the Fetal Lamb (Van den Eede)</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260625_050146_the_fetal_frontier_-_week_of_2026_06_25.mp3#t=310">5:11</a> — Round 4: Genetic Yield in Isolated Severe Early-Onset FGR (Mossayebi)</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260625_050146_the_fetal_frontier_-_week_of_2026_06_25.mp3#t=354">5:55</a> — Close: What to Watch, What&apos;s Unsettled</li></ol><br><br><strong>Follow-up links:</strong><ul><li><a href="https://doi.org/10.1002/pd.70202">Fetal Brain Abnormalities Following Laser Surgery for Twin-to-Twin Transfusion Syndrome: Imaging Patterns and Evolution</a> - Defines the temporal arc of brain injury after FLA, informing surveillance protocols and family counseling</li><li><a href="https://doi.org/10.1002/pd.70118">Gene Panel Versus Whole Exome Sequencing for Fetal Anomalies</a> - Guides sequencing strategy choice — panels capture most variants, ES adds value for complex phenotypes</li><li><a href="https://doi.org/10.1002/pd.70180">Prenatal Diagnosis and Management of Kaposiform Hemangioendothelioma With Kasabach-Merritt Phenomenon: Imaging Features and First Experience With Maternal Sirolimus Therapy</a> - First reported fetal therapy with maternal sirolimus for this rare vascular tumor</li><li><a href="https://doi.org/10.1002/pd.70157">Novel Fetal Embolization Technique via Transcardiac Transarterial Ultrasound- and Fluoroscopy-Guided Endovascular Surgery for Vein of Galen Malformation: Preclinical Study in the Fetal Lamb</a> - Proof of concept for in-utero embolization of a malformation with otherwise poor postnatal outcomes</li><li><a href="https://doi.org/10.1002/pd.70182">Severe Early-Onset Fetal Growth Restriction: The Yield of Antenatal and Postnatal Genetic Testing</a> - Tempers expectations for genetic diagnosis in isolated severe early-onset FGR</li></ul><br><br><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260625_050146_the_fetal_frontier_-_week_of_2026_06_25.companion.json">Episode companion data</a>]]></description>
      <content:encoded><![CDATA[Post-FLA brain injury is a known risk. What hasn&apos;t been clear is when different injury patterns appear and how they evolve — which means centers running fetoscopic laser programs have been counseling families with imprecise language about what to watch for and when. Kunpalin changes that picture.
And if the timing matters, the surveillance protocol matters. Most centers aren&apos;t running a formalized post-FLA MRI schedule. Kunpalin gives &quot;watching&quot; a structure.
CAS...<br><br><em>Juno, Caspar, and any guest voices are AI-generated. Episode text and audio are generated with human-directed software.</em><br><br><strong>Chapters:</strong><ol><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260625_050146_the_fetal_frontier_-_week_of_2026_06_25.mp3#t=0">0:00</a> — Cold Open: The Surveillance Gap</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260625_050146_the_fetal_frontier_-_week_of_2026_06_25.mp3#t=44">0:44</a> — Headline: Clinical Question and Design</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260625_050146_the_fetal_frontier_-_week_of_2026_06_25.mp3#t=88">1:29</a> — Headline: The Temporal Arc</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260625_050146_the_fetal_frontier_-_week_of_2026_06_25.mp3#t=133">2:13</a> — Headline: Practice Implications and Counseling Language</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260625_050146_the_fetal_frontier_-_week_of_2026_06_25.mp3#t=177">2:57</a> — Round 1: Panels vs. Exomes (Swanson)</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260625_050146_the_fetal_frontier_-_week_of_2026_06_25.mp3#t=221">3:42</a> — Round 2: Maternal Sirolimus for Fetal KHE (Fraissenon)</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260625_050146_the_fetal_frontier_-_week_of_2026_06_25.mp3#t=266">4:26</a> — Round 3: FETTUS in the Fetal Lamb (Van den Eede)</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260625_050146_the_fetal_frontier_-_week_of_2026_06_25.mp3#t=310">5:11</a> — Round 4: Genetic Yield in Isolated Severe Early-Onset FGR (Mossayebi)</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260625_050146_the_fetal_frontier_-_week_of_2026_06_25.mp3#t=354">5:55</a> — Close: What to Watch, What&apos;s Unsettled</li></ol><br><br><strong>Follow-up links:</strong><ul><li><a href="https://doi.org/10.1002/pd.70202">Fetal Brain Abnormalities Following Laser Surgery for Twin-to-Twin Transfusion Syndrome: Imaging Patterns and Evolution</a> - Defines the temporal arc of brain injury after FLA, informing surveillance protocols and family counseling</li><li><a href="https://doi.org/10.1002/pd.70118">Gene Panel Versus Whole Exome Sequencing for Fetal Anomalies</a> - Guides sequencing strategy choice — panels capture most variants, ES adds value for complex phenotypes</li><li><a href="https://doi.org/10.1002/pd.70180">Prenatal Diagnosis and Management of Kaposiform Hemangioendothelioma With Kasabach-Merritt Phenomenon: Imaging Features and First Experience With Maternal Sirolimus Therapy</a> - First reported fetal therapy with maternal sirolimus for this rare vascular tumor</li><li><a href="https://doi.org/10.1002/pd.70157">Novel Fetal Embolization Technique via Transcardiac Transarterial Ultrasound- and Fluoroscopy-Guided Endovascular Surgery for Vein of Galen Malformation: Preclinical Study in the Fetal Lamb</a> - Proof of concept for in-utero embolization of a malformation with otherwise poor postnatal outcomes</li><li><a href="https://doi.org/10.1002/pd.70182">Severe Early-Onset Fetal Growth Restriction: The Yield of Antenatal and Postnatal Genetic Testing</a> - Tempers expectations for genetic diagnosis in isolated severe early-onset FGR</li></ul><br><br><strong>Sources:</strong><ul><li>Kunpalin et al. - Prenat Diagn - 2026 - Fetal Brain Abnormalities Following Laser Surgery for Twin-to-Twin Transfusion Syndrome: Imaging Patterns and Evolution (https://doi.org/10.1002/pd.70202)</li><li>Swanson et al. - Prenat Diagn - 2026 - Gene Panel Versus Whole Exome Sequencing for Fetal Anomalies (https://doi.org/10.1002/pd.70118)</li><li>Fraissenon et al. - Prenat Diagn - 2026 - Prenatal Diagnosis and Management of Kaposiform Hemangioendothelioma With Kasabach-Merritt Phenomenon: Imaging Features and First Experience With Maternal Sirolimus Therapy (https://doi.org/10.1002/pd.70180)</li><li>Van den Eede - Prenat Diagn - 2026 - Novel Fetal Embolization Technique via Transcardiac Transarterial Ultrasound- and Fluoroscopy-Guided Endovascular Surgery for Vein of Galen Malformation: Preclinical Study in the Fetal Lamb (https://doi.org/10.1002/pd.70157)</li><li>Mossayebi et al. - Prenat Diagn - 2026 - Severe Early-Onset Fetal Growth Restriction: The Yield of Antenatal and Postnatal Genetic Testing (https://doi.org/10.1002/pd.70182)</li></ul><br><em>Original synthetic theme music generated locally for this episode.</em><br><br><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260625_050146_the_fetal_frontier_-_week_of_2026_06_25.companion.json">Episode companion data</a>]]></content:encoded>
      <pubDate>Thu, 25 Jun 2026 10:15:50 +0000</pubDate>
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      <title>When Fetal Transfusions Go Wrong</title>
      <description><![CDATA[Ten percent intracranial hemorrhage. That&apos;s the number from the Özbakir series, and if it&apos;s not in your pre-procedure consent conversation explicitly, it needs to be.
Not &quot;there are risks.&quot; Ten percent.
Parvovirus B19 is circulating at elevated levels in many regions. Most fetal therapy centers have run more IUTs in the last several months than in prior comparable periods. The granular complication data for this specific indication, during an acti...<br><br><em>Juno, Caspar, and any guest voices are AI-generated. Episode text and audio are generated with human-directed software.</em><br><br><strong>Chapters:</strong><ol><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260701_050158_the_fetal_frontier_-_week_of_2026_07_01.mp3#t=0">0:00</a> — Cold Open: The Number That Changes the Consent Conversation</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260701_050158_the_fetal_frontier_-_week_of_2026_07_01.mp3#t=47">0:48</a> — Headline: Study Design and Population</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260701_050158_the_fetal_frontier_-_week_of_2026_07_01.mp3#t=95">1:35</a> — Headline: The Three Numbers</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260701_050158_the_fetal_frontier_-_week_of_2026_07_01.mp3#t=142">2:23</a> — Headline: Hydrops as Risk Amplifier and the Consent Implication</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260701_050158_the_fetal_frontier_-_week_of_2026_07_01.mp3#t=190">3:10</a> — Pivot + Round 1: cfDNA-SGD and Imaging Integration (Araji)</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260701_050158_the_fetal_frontier_-_week_of_2026_07_01.mp3#t=237">3:58</a> — Round 2: Structural Variation Sequencing for Partial Duplications (Qin)</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260701_050158_the_fetal_frontier_-_week_of_2026_07_01.mp3#t=285">4:45</a> — Round 3: PUV Diagnosis Timing and the Severity Confound (Pecorelli)</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260701_050158_the_fetal_frontier_-_week_of_2026_07_01.mp3#t=332">5:33</a> — Round 4: Doppler Reference Chart Heterogeneity (Vayenas)</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260701_050158_the_fetal_frontier_-_week_of_2026_07_01.mp3#t=380">6:20</a> — Close: Open Threads and Sign-Off</li></ol><br><br><strong>Follow-up links:</strong><ul><li><a href="https://doi.org/10.1002/pd.70107">Intrauterine Transfusions in Fetuses Affected by Parvovirus B19: Complications, Challenges and Outcomes</a> - Quantifies real-world IUT complication rates during parvovirus epidemic, with 10% ICH and survival halved when complications occur — essential for pre-procedure counseling</li><li><a href="https://doi.org/10.1002/pd.70204">Enhancing Prenatal Genetic Evaluation Through the Combination of Single-Gene Non-Invasive Prenatal Screening and Prenatal Imaging</a> - Provides practical framework for integrating cfDNA single-gene screening with multimodal imaging to improve result interpretation</li><li><a href="https://doi.org/10.1002/pd.70209">Structural Variation Sequencing of 26 Amniotic Fluid Samples With Partial Gene Duplications and Postnatal Follow-Up of the Fetuses</a> - Demonstrates SV-seq can resolve partial duplication architecture and reclassify VUS, improving prenatal prognostication</li><li><a href="https://doi.org/10.1002/pd.70155">Prenatal Diagnosis of Posterior Urethral Valves: Timing of Diagnosis and Mid-Term Renal Function When Second and Third Trimester Ultrasounds Are Systematically Performed</a> - Links earlier PUV detection to worse renal outcomes, informing counseling and intervention timing discussions</li><li><a href="https://doi.org/10.1002/uog.70222">Optimal umbilical artery Doppler chart for predicting placenta-mediated fetal growth restriction</a> - Shows reference chart choice substantially affects FGR prediction accuracy — prompts units to audit their Doppler standards</li></ul><br><br><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260701_050158_the_fetal_frontier_-_week_of_2026_07_01.companion.json">Episode companion data</a>]]></description>
      <content:encoded><![CDATA[Ten percent intracranial hemorrhage. That&apos;s the number from the Özbakir series, and if it&apos;s not in your pre-procedure consent conversation explicitly, it needs to be.
Not &quot;there are risks.&quot; Ten percent.
Parvovirus B19 is circulating at elevated levels in many regions. Most fetal therapy centers have run more IUTs in the last several months than in prior comparable periods. The granular complication data for this specific indication, during an acti...<br><br><em>Juno, Caspar, and any guest voices are AI-generated. Episode text and audio are generated with human-directed software.</em><br><br><strong>Chapters:</strong><ol><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260701_050158_the_fetal_frontier_-_week_of_2026_07_01.mp3#t=0">0:00</a> — Cold Open: The Number That Changes the Consent Conversation</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260701_050158_the_fetal_frontier_-_week_of_2026_07_01.mp3#t=47">0:48</a> — Headline: Study Design and Population</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260701_050158_the_fetal_frontier_-_week_of_2026_07_01.mp3#t=95">1:35</a> — Headline: The Three Numbers</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260701_050158_the_fetal_frontier_-_week_of_2026_07_01.mp3#t=142">2:23</a> — Headline: Hydrops as Risk Amplifier and the Consent Implication</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260701_050158_the_fetal_frontier_-_week_of_2026_07_01.mp3#t=190">3:10</a> — Pivot + Round 1: cfDNA-SGD and Imaging Integration (Araji)</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260701_050158_the_fetal_frontier_-_week_of_2026_07_01.mp3#t=237">3:58</a> — Round 2: Structural Variation Sequencing for Partial Duplications (Qin)</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260701_050158_the_fetal_frontier_-_week_of_2026_07_01.mp3#t=285">4:45</a> — Round 3: PUV Diagnosis Timing and the Severity Confound (Pecorelli)</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260701_050158_the_fetal_frontier_-_week_of_2026_07_01.mp3#t=332">5:33</a> — Round 4: Doppler Reference Chart Heterogeneity (Vayenas)</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260701_050158_the_fetal_frontier_-_week_of_2026_07_01.mp3#t=380">6:20</a> — Close: Open Threads and Sign-Off</li></ol><br><br><strong>Follow-up links:</strong><ul><li><a href="https://doi.org/10.1002/pd.70107">Intrauterine Transfusions in Fetuses Affected by Parvovirus B19: Complications, Challenges and Outcomes</a> - Quantifies real-world IUT complication rates during parvovirus epidemic, with 10% ICH and survival halved when complications occur — essential for pre-procedure counseling</li><li><a href="https://doi.org/10.1002/pd.70204">Enhancing Prenatal Genetic Evaluation Through the Combination of Single-Gene Non-Invasive Prenatal Screening and Prenatal Imaging</a> - Provides practical framework for integrating cfDNA single-gene screening with multimodal imaging to improve result interpretation</li><li><a href="https://doi.org/10.1002/pd.70209">Structural Variation Sequencing of 26 Amniotic Fluid Samples With Partial Gene Duplications and Postnatal Follow-Up of the Fetuses</a> - Demonstrates SV-seq can resolve partial duplication architecture and reclassify VUS, improving prenatal prognostication</li><li><a href="https://doi.org/10.1002/pd.70155">Prenatal Diagnosis of Posterior Urethral Valves: Timing of Diagnosis and Mid-Term Renal Function When Second and Third Trimester Ultrasounds Are Systematically Performed</a> - Links earlier PUV detection to worse renal outcomes, informing counseling and intervention timing discussions</li><li><a href="https://doi.org/10.1002/uog.70222">Optimal umbilical artery Doppler chart for predicting placenta-mediated fetal growth restriction</a> - Shows reference chart choice substantially affects FGR prediction accuracy — prompts units to audit their Doppler standards</li></ul><br><br><strong>Sources:</strong><ul><li>Özbakir et al. - Prenatal Diagnosis - 2026 - Intrauterine Transfusions in Fetuses Affected by Parvovirus B19: Complications, Challenges and Outcomes (https://doi.org/10.1002/pd.70107)</li><li>Araji et al. - Prenatal Diagnosis - 2026 - Enhancing Prenatal Genetic Evaluation Through the Combination of Single-Gene Non-Invasive Prenatal Screening and Prenatal Imaging (https://doi.org/10.1002/pd.70204)</li><li>Qin et al. - Prenatal Diagnosis - 2026 - Structural Variation Sequencing of 26 Amniotic Fluid Samples With Partial Gene Duplications and Postnatal Follow-Up of the Fetuses (https://doi.org/10.1002/pd.70209)</li><li>Pecorelli et al. - Prenatal Diagnosis - 2026 - Prenatal Diagnosis of Posterior Urethral Valves: Timing of Diagnosis and Mid-Term Renal Function When Second and Third Trimester Ultrasounds Are Systematically Performed (https://doi.org/10.1002/pd.70155)</li><li>Vayenas et al. - Ultrasound in Obstetrics and Gynecology - 2026 - Optimal umbilical artery Doppler chart for predicting placenta-mediated fetal growth restriction (https://doi.org/10.1002/uog.70222)</li></ul><br><em>Original synthetic theme music generated locally for this episode.</em><br><br><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260701_050158_the_fetal_frontier_-_week_of_2026_07_01.companion.json">Episode companion data</a>]]></content:encoded>
      <pubDate>Wed, 01 Jul 2026 10:19:25 +0000</pubDate>
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      <title>When Hydrops Meets the Heart</title>
      <description><![CDATA[Moon-Grady and IFCIR published this week. Hydropic fetuses with CHD, invasive cardiac intervention versus expectant management — survival advantage in the intervention group. How much work that sentence can do depends entirely on whether the selection-bias caveat lands first.
It sits in sequence with prior work on procedural risk in high-acuity intervention populations. This week is the cardiac equivalent — does intervention actually move survival when hyd...<br><br><em>Juno, Caspar, and any guest voices are AI-generated. Episode text and audio are generated with human-directed software.</em><br><br><strong>Chapters:</strong><ol><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260708_050201_the_fetal_frontier_-_week_of_2026_07_08.mp3#t=0">0:00</a> — Cold Open: What This Week&apos;s Lead Paper Changes</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260708_050201_the_fetal_frontier_-_week_of_2026_07_08.mp3#t=40">0:40</a> — Headline: Design and Why IFCIR Earns Its Evidence Grade</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260708_050201_the_fetal_frontier_-_week_of_2026_07_08.mp3#t=80">1:21</a> — Headline: The Survival Signal and What the Numbers Show</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260708_050201_the_fetal_frontier_-_week_of_2026_07_08.mp3#t=121">2:01</a> — Headline: The Selection-Bias Mechanism and What It Means for Citation</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260708_050201_the_fetal_frontier_-_week_of_2026_07_08.mp3#t=161">2:42</a> — Headline: Practice Impact</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260708_050201_the_fetal_frontier_-_week_of_2026_07_08.mp3#t=202">3:22</a> — Round 1: Kyhl-Svart, ART and Minor CHD</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260708_050201_the_fetal_frontier_-_week_of_2026_07_08.mp3#t=242">4:03</a> — Round 2: Nair, Fetal Sinus Bradycardia Spectrum</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260708_050201_the_fetal_frontier_-_week_of_2026_07_08.mp3#t=283">4:43</a> — Round 3: Li, Genomic Yield in Fetal Polydactyly</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260708_050201_the_fetal_frontier_-_week_of_2026_07_08.mp3#t=323">5:24</a> — Round 4: Jiang, NIPT for Rare Autosomal Trisomies</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260708_050201_the_fetal_frontier_-_week_of_2026_07_08.mp3#t=364">6:04</a> — Close: What to Watch, What Is Still Unsettled</li></ol><br><br><strong>Follow-up links:</strong><ul><li><a href="https://doi.org/10.1002/uog.70245">Invasive in-utero cardiac intervention in the hydropic fetus may improve survival: results from the International Fetal Cardiac Intervention Registry (IFCIR)</a> - Largest multicenter dataset on fetal cardiac intervention in hydrops; supports survival benefit and informs referral decisions for this high-acuity population.</li><li><a href="https://doi.org/10.1002/uog.70246">Risk of minor congenital heart defect in infants conceived via assisted reproductive technology: cohort study from the Copenhagen Baby Heart Study</a> - Extends ART-CHD association to minor defects; may shift prenatal cardiac screening recommendations for ART pregnancies.</li><li><a href="https://doi.org/10.1002/uog.70260">Spectrum of potentially lethal cardiac conditions presenting with fetal sinus bradycardia: a report on 34 cases</a> - Clarifies that fetal sinus bradycardia can herald serious inherited arrhythmia or structural disease; argues against dismissing this finding as benign.</li><li><a href="https://doi.org/10.1002/pd.70216">Genomic Landscape and Perinatal Outcomes of Fetal Polydactyly: A Retrospective Cohort Study Integrating CNV-seq and Trio-ES</a> - Quantifies genetic diagnostic yield in fetal polydactyly; guides invasive testing decisions based on isolated versus syndromic presentation.</li><li><a href="https://doi.org/10.1002/pd.70181">High Risk for Rare Autosomal Trisomies Detected by Non-Invasive Prenatal Testing: Prenatal Diagnosis and Pregnancy Outcomes</a> - Demonstrates very low PPV for NIPT-flagged rare autosomal trisomies; essential for calibrating patient counseling and avoiding overintervention.</li></ul><br><br><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260708_050201_the_fetal_frontier_-_week_of_2026_07_08.companion.json">Episode companion data</a>]]></description>
      <content:encoded><![CDATA[Moon-Grady and IFCIR published this week. Hydropic fetuses with CHD, invasive cardiac intervention versus expectant management — survival advantage in the intervention group. How much work that sentence can do depends entirely on whether the selection-bias caveat lands first.
It sits in sequence with prior work on procedural risk in high-acuity intervention populations. This week is the cardiac equivalent — does intervention actually move survival when hyd...<br><br><em>Juno, Caspar, and any guest voices are AI-generated. Episode text and audio are generated with human-directed software.</em><br><br><strong>Chapters:</strong><ol><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260708_050201_the_fetal_frontier_-_week_of_2026_07_08.mp3#t=0">0:00</a> — Cold Open: What This Week&apos;s Lead Paper Changes</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260708_050201_the_fetal_frontier_-_week_of_2026_07_08.mp3#t=40">0:40</a> — Headline: Design and Why IFCIR Earns Its Evidence Grade</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260708_050201_the_fetal_frontier_-_week_of_2026_07_08.mp3#t=80">1:21</a> — Headline: The Survival Signal and What the Numbers Show</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260708_050201_the_fetal_frontier_-_week_of_2026_07_08.mp3#t=121">2:01</a> — Headline: The Selection-Bias Mechanism and What It Means for Citation</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260708_050201_the_fetal_frontier_-_week_of_2026_07_08.mp3#t=161">2:42</a> — Headline: Practice Impact</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260708_050201_the_fetal_frontier_-_week_of_2026_07_08.mp3#t=202">3:22</a> — Round 1: Kyhl-Svart, ART and Minor CHD</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260708_050201_the_fetal_frontier_-_week_of_2026_07_08.mp3#t=242">4:03</a> — Round 2: Nair, Fetal Sinus Bradycardia Spectrum</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260708_050201_the_fetal_frontier_-_week_of_2026_07_08.mp3#t=283">4:43</a> — Round 3: Li, Genomic Yield in Fetal Polydactyly</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260708_050201_the_fetal_frontier_-_week_of_2026_07_08.mp3#t=323">5:24</a> — Round 4: Jiang, NIPT for Rare Autosomal Trisomies</li><li><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260708_050201_the_fetal_frontier_-_week_of_2026_07_08.mp3#t=364">6:04</a> — Close: What to Watch, What Is Still Unsettled</li></ol><br><br><strong>Follow-up links:</strong><ul><li><a href="https://doi.org/10.1002/uog.70245">Invasive in-utero cardiac intervention in the hydropic fetus may improve survival: results from the International Fetal Cardiac Intervention Registry (IFCIR)</a> - Largest multicenter dataset on fetal cardiac intervention in hydrops; supports survival benefit and informs referral decisions for this high-acuity population.</li><li><a href="https://doi.org/10.1002/uog.70246">Risk of minor congenital heart defect in infants conceived via assisted reproductive technology: cohort study from the Copenhagen Baby Heart Study</a> - Extends ART-CHD association to minor defects; may shift prenatal cardiac screening recommendations for ART pregnancies.</li><li><a href="https://doi.org/10.1002/uog.70260">Spectrum of potentially lethal cardiac conditions presenting with fetal sinus bradycardia: a report on 34 cases</a> - Clarifies that fetal sinus bradycardia can herald serious inherited arrhythmia or structural disease; argues against dismissing this finding as benign.</li><li><a href="https://doi.org/10.1002/pd.70216">Genomic Landscape and Perinatal Outcomes of Fetal Polydactyly: A Retrospective Cohort Study Integrating CNV-seq and Trio-ES</a> - Quantifies genetic diagnostic yield in fetal polydactyly; guides invasive testing decisions based on isolated versus syndromic presentation.</li><li><a href="https://doi.org/10.1002/pd.70181">High Risk for Rare Autosomal Trisomies Detected by Non-Invasive Prenatal Testing: Prenatal Diagnosis and Pregnancy Outcomes</a> - Demonstrates very low PPV for NIPT-flagged rare autosomal trisomies; essential for calibrating patient counseling and avoiding overintervention.</li></ul><br><br><strong>Sources:</strong><ul><li>Moon-Grady et al. - Ultrasound Obstet Gynecol - 2026 - Invasive in-utero cardiac intervention in the hydropic fetus may improve survival: results from the International Fetal Cardiac Intervention Registry (IFCIR) (https://doi.org/10.1002/uog.70245)</li><li>Kyhl-Svart et al. - Ultrasound Obstet Gynecol - 2026 - Risk of minor congenital heart defect in infants conceived via assisted reproductive technology: cohort study from the Copenhagen Baby Heart Study (https://doi.org/10.1002/uog.70246)</li><li>Nair et al. - Ultrasound Obstet Gynecol - 2026 - Spectrum of potentially lethal cardiac conditions presenting with fetal sinus bradycardia: a report on 34 cases (https://doi.org/10.1002/uog.70260)</li><li>Li et al. - Prenat Diagn - 2026 - Genomic Landscape and Perinatal Outcomes of Fetal Polydactyly: A Retrospective Cohort Study Integrating CNV-seq and Trio-ES (https://doi.org/10.1002/pd.70216)</li><li>Jiang et al. - Prenat Diagn - 2026 - High Risk for Rare Autosomal Trisomies Detected by Non-Invasive Prenatal Testing: Prenatal Diagnosis and Pregnancy Outcomes (https://doi.org/10.1002/pd.70181)</li></ul><br><em>Original synthetic theme music generated locally for this episode.</em><br><br><a href="https://rauscha.github.io/Dialog-podcast/episodes/20260708_050201_the_fetal_frontier_-_week_of_2026_07_08.companion.json">Episode companion data</a>]]></content:encoded>
      <pubDate>Wed, 08 Jul 2026 10:19:53 +0000</pubDate>
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