Why the study?
What are the fetal hazards of oral anticoagulant or heparin exposure during pregnancy?
What are the fetal hazards of oral anticoagulant or heparin exposure during pregnancy?
Oral anticoagulants and heparin pose significant risks to fetal development and survival during pregnancy, highlighting the complex challenge of managing anticoagulation in pregnant patients.
Answers are grounded in this paper and cite their sources.
Highlights need for alternative anticoagulation strategies in pregnancy; leaves open optimal regimens pending higher-quality evidence.
Prenatal exposure to oral anticoagulants during pregnancy may result in defective fetal development or life-threatening hemorrhage. Fetal exposure during the first eight weeks of pregnancy may cause abnormal development of the facial structures, hypoplastic digits, strippled epiphyses, and mental retardation. Midtrimester exposure may result in optic atrophy, faulty brain growth, and developmental retardation. Third-trimester exposure may produce fetal anticoagulation, predisposing the infant to life-threatening hemorrhage in the perinatal period. Anticoagulation with heparin sodium does not provide a clearly safe alternative, since this therapy has been associated with excessive fetal loss.
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Roger E. Stevenson (1980) studied this question.
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