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[Aspirin and preeclampsia].

Anthony Atallah1, Edouard Lecarpentier2, François Goffinet3

  • 1Groupement hospitalier Est, centre hospitalier universitaire, département de gynécologie-obstétrique, maternité de l'hôpital Femme-Mère-Enfant, hospices civils de Lyon, 59, boulevard Pinel, 69100 Bron, France; Université Claude-Bernard Lyon1, Lyon, France.

Presse Medicale (Paris, France : 1983)
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Summary

Aspirin use in pregnancy, particularly for preeclampsia prevention, requires careful dosage and timing. While effective for secondary prevention, optimal dosing and fetal safety data, especially at higher doses, are still under investigation.

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Area of Science:

  • Obstetrics and Gynecology
  • Pharmacology
  • Maternal-Fetal Medicine

Background:

  • Aspirin prescription during pregnancy is increasing, leading to potential overuse.
  • Aspirin is recognized for secondary prevention of preeclampsia in women with a prior history.

Purpose of the Study:

  • To evaluate the optimal dosage and timing of aspirin for preeclampsia prevention.
  • To assess the efficacy and safety of aspirin in both primary and secondary prevention of preeclampsia.

Main Methods:

  • Dose-dependent effects of aspirin on platelet aggregation and the TXA2/PGI2 balance were analyzed.
  • Chronobiological effects of aspirin intake were considered.
  • Efficacy in primary prevention for high-risk patients identified in the first trimester was examined.

Main Results:

  • Aspirin's efficacy in secondary preeclampsia prevention is established, with optimal dosage likely between 75mg/day and 150mg/day.
  • Limited fetal safety data exist for aspirin at 150mg/day.
  • Evening or bedtime aspirin intake may enhance efficacy.
  • Aspirin shows promise in reducing early-onset preeclampsia in high-risk first-trimester patients.

Conclusions:

  • Optimal aspirin dosage (75-150mg/day) and timing (evening/bedtime) require further research for preeclampsia prevention.
  • More data are needed on fetal safety at 150mg/day.
  • While promising for primary prevention in high-risk groups, widespread screening implementation requires more evidence.