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Increased bleeding time after magnesium sulfate infusion

M Kynczl-Leisure1, L A Cibils

  • 1University of Chicago and the Chicago Lying-in Hospital, IL 60637, USA.

American Journal of Obstetrics and Gynecology
|November 1, 1996
PubMed
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Magnesium sulfate infusions may increase bleeding time in preeclampsia patients. This study observed a significant increase in bleeding duration for those receiving magnesium, suggesting a potential risk for increased blood loss.

Area of Science:

  • Obstetrics and Gynecology
  • Pharmacology
  • Hematology

Background:

  • Preeclampsia is a serious pregnancy complication.
  • Magnesium sulfate is commonly used to manage preeclampsia.
  • Anecdotal evidence suggested a link between magnesium sulfate and increased blood loss.

Purpose of the Study:

  • To investigate the effect of magnesium sulfate infusions on bleeding time in preeclampsia patients.
  • To quantify changes in bleeding time associated with magnesium sulfate administration.

Main Methods:

  • A modified Ivy bleeding time test was performed.
  • Measurements were taken before and after magnesium sulfate infusion.
  • A control group of preeclampsia patients not receiving magnesium was included.

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Main Results:

  • Bleeding time more than doubled in patients receiving magnesium sulfate.
  • No significant change in bleeding time was observed in the control group.
  • This indicates a potential pro-hemorrhagic effect of magnesium sulfate.

Conclusions:

  • Magnesium sulfate administration appears to prolong bleeding time in preeclampsia.
  • Clinicians should be aware of this potential side effect and monitor blood loss.
  • Further research is warranted to elucidate the mechanism and clinical implications.