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Related Experiment Videos

Intra-amniotic pressure reduction in twin-twin transfusion syndrome

D Garry1, A Lysikiewicz, J Mays

  • 1Department of Obstetrics and Gynecology, New York Medical College, Westchester County Medical Center, Valhalla, USA.

Journal of Perinatology : Official Journal of the California Perinatal Association
|September 8, 1998
PubMed
Summary

Intra-amniotic pressure is elevated in twin-twin transfusion syndrome pregnancies. Decompression amniocentesis effectively lowers this pressure to normal levels, aiding in managing this high-risk condition.

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Area of Science:

  • Perinatology
  • Maternal-Fetal Medicine
  • Obstetrics

Background:

  • Twin-twin transfusion syndrome (TTTS) is a serious complication of monochorionic twin pregnancies.
  • Elevated intra-amniotic pressure is a characteristic feature of TTTS.
  • Accurate measurement of intra-amniotic pressure is crucial for understanding TTTS pathophysiology.

Purpose of the Study:

  • To quantify intra-amniotic pressure in twin-twin transfusion syndrome (TTTS) pregnancies.
  • To assess the effect of decompression amniocentesis on intra-amniotic pressure in TTTS.
  • To compare intra-amniotic pressure in TTTS with uncomplicated gestations.

Main Methods:

  • Intra-amniotic pressures were measured using a water manometer in 5 pregnancies with TTTS.
  • Measurements were taken before and after therapeutic amniocentesis.

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  • A control group of 10 uncomplicated gestations was included for comparison.

    • Main Results:

    • Initial intra-amniotic pressures in TTTS pregnancies (mean 17.2 cm H2O) were significantly higher than in uncomplicated gestations (mean 8.4 cm H2O; p < 0.002).
    • Following decompression amniocentesis, intra-amniotic pressures in TTTS pregnancies decreased (mean 10.9 cm H2O).
    • Post-amniocentesis pressures in TTTS were comparable to those in uncomplicated gestations (p = 0.16).

    Conclusions:

    • Twin-twin transfusion syndrome is associated with significantly elevated intra-amniotic pressure.
    • Decompression amniocentesis is an effective intervention to normalize intra-amniotic pressure in TTTS.
    • These findings support the role of amniocentesis in managing TTTS.