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Related Experiment Video

Updated: May 27, 2026

Guide Wire Assisted Catheterization and Colored Dye Injection for Vascular Mapping of Monochorionic Twin Placentas
09:04

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Published on: September 5, 2011

[Acardiac twins: pronostics markers' study].

M Barré1, C Le Vaillant, G Boog

  • 1Service de gynécologie-obstétrique CHU de Nantes, hôpital Mère-Enfant, 38, boulevard Jean-Monnet, 44093 Nantes cedex 1, France.

Gynecologie, Obstetrique & Fertilite
|November 22, 2011
PubMed
Summary
This summary is machine-generated.

Ultrasonographic markers can predict prognosis in twin reversed arterial perfusion (TRAP) sequence. Key indicators include resistance indices, middle cerebral artery peak velocity, tricuspid regurgitation, and abdominal circumference ratios for improved management.

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Last Updated: May 27, 2026

Guide Wire Assisted Catheterization and Colored Dye Injection for Vascular Mapping of Monochorionic Twin Placentas
09:04

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Model Surgical Training: Skills Acquisition in Fetoscopic Laser Photocoagulation of Monochorionic Diamniotic Twin Placenta Using Realistic Simulators
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09:52

Accurate and Simple Evaluation of Vascular Anastomoses in Monochorionic Placenta using Colored Dye

Published on: September 5, 2011

Area of Science:

  • Perinatology
  • Fetal Medicine
  • Diagnostic Ultrasound

Background:

  • Twin reversed arterial perfusion (TRAP) sequence is a rare complication of monochorionic twin pregnancies.
  • Effective management relies on early and accurate prognostic prediction.
  • Ultrasonography plays a crucial role in assessing fetal well-being in complex twin gestations.

Observation:

  • A retrospective multicentric study analyzed six cases of TRAP sequence between 1997 and 2006.
  • Evaluated ultrasonographic markers included fetal growth, signs of congestive heart failure, umbilical artery resistance index, ductus venosus Doppler, and middle cerebral artery peak velocity.
  • No established consensus existed for ultrasonographic monitoring protocols.

Findings:

  • The ratio of resistance indices between twins, middle cerebral artery peak velocity, tricuspid regurgitation, and the ratio of abdominal circumferences are significant predictors of outcome.
  • These markers, when analyzed collectively, offer valuable prognostic information.
  • Individual marker utility may vary, emphasizing a comprehensive assessment.

Implications:

  • Implementing these ultrasonographic markers can guide clinical management strategies for TRAP sequence.
  • Improved prognostic accuracy allows for timely interventions and optimized perinatal care.
  • Further research can refine monitoring protocols based on these identified key parameters.