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Related Experiment Videos

Hemophilia during pregnancy.

Ran D Goldman1, Victor Blanchette, Gideon Koren

  • 1Hospital for Sick Children, Toronto, Ont.

Canadian Family Physician Medecin De Famille Canadien
|January 8, 2004
PubMed
Summary

Pregnancy management for hemophilia B carriers involves antenatal testing like chorionic villous sampling. Vaginal delivery is safe, but vacuum extraction should be avoided to prevent fetal complications.

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Area of Science:

  • Obstetrics and Gynecology
  • Hematology
  • Medical Genetics

Background:

  • Female carriers of hemophilia B may present with reduced plasma factor levels due to X chromosome inactivation.
  • Managing pregnancy in hemophilia carriers requires careful consideration of fetal testing and delivery methods.

Purpose of the Study:

  • To outline the management of pregnancy in a patient who is a known carrier of hemophilia B.
  • To discuss antenatal testing options and delivery considerations for hemophilia carriers.

Main Methods:

  • Review of literature on hemophilia carrier management during pregnancy.
  • Analysis of risks and benefits associated with antenatal diagnostic tests.
  • Evaluation of delivery methods in the context of bleeding risks.

Main Results:

  • Chorionic villous sampling is recommended for fetal sex determination and diagnosis of hemophilia in male fetuses.
  • Female carriers often exhibit lower factor levels, influenced by X chromosome inactivation patterns.

Conclusions:

  • Antenatal diagnosis using chorionic villous sampling is crucial for affected male fetuses.
  • Vaginal delivery is a safe option for hemophilia B carriers, comparable to cesarean section.
  • Avoidance of vacuum extraction during delivery is advised to mitigate risks of intracranial hemorrhage and cephalhematoma.

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