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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

Hydramnios in twin gestations.

Jennifer S Hernandez1, Diane M Twickler, Donald D McIntire

  • 1University of Texas Southwestern Medical Center, Department of Obstetrics and Gynecology, Dallas, Texas 75235-9032, USA. jenn_schultz@sbcglobal.net

Obstetrics and Gynecology
|September 22, 2012
PubMed
Summary
This summary is machine-generated.

Hydramnios is common in twin pregnancies and linked to higher anomaly rates. Severe hydramnios in monochorionic twins increases stillbirth risk, though overall adverse outcomes are not more frequent.

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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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Area of Science:

  • Perinatology
  • Maternal-Fetal Medicine
  • Twin Gestation Research

Background:

  • Hydramnios, an excess of amniotic fluid, is a known complication in singleton pregnancies.
  • The impact of hydramnios on pregnancy outcomes in twin gestations, particularly differentiating between dichorionic and monochorionic twins, requires further elucidation.

Purpose of the Study:

  • To investigate the association between hydramnios and various pregnancy outcomes in dichorionic and monochorionic twin pregnancies.
  • To determine if the degree of hydramnios influences the risk of adverse outcomes in twin gestations.

Main Methods:

  • Retrospective cohort study of 1,951 twin pregnancies with ultrasound data (1997-2010).
  • Hydramnios defined as single deepest pocket ≥ 8 cm, categorized as mild, moderate, or severe.
  • Exclusion of monoamniotic pregnancies and those with twin-twin transfusion syndrome; analysis of anomalous neonates and stillbirths.

Main Results:

  • Hydramnios occurred in 18% of twin pregnancies (348/1,951).
  • Major anomalies increased with hydramnios severity in both dichorionic and monochorionic twins (P<.001).
  • Severe hydramnios was significantly linked to stillbirth in monochorionic twins (27%, P<.001), but not other adverse outcomes like preterm delivery or neonatal death.

Conclusions:

  • Hydramnios is prevalent in twin pregnancies, affecting 1 in 6.
  • Increasing hydramnios severity correlates with higher anomaly rates; severe cases in monochorionic twins pose a stillbirth risk.
  • Despite observed associations, hydramnios did not appear to increase overall adverse pregnancy outcomes in twin gestations.