Key result
Heart-lung bypass during third-trimester open mitral valvotomy reveals acute fetal hypoxia despite healthy full-term deliveries.
Population
2 pregnant patients in the third trimester with critical mitral stenosis
Design
Case_report
Follow-up
until full-term delivery
Authors
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Supports fetal monitoring in third-trimester maternal cardiac surgery; hypothesis-generating for protocols given Level 5 evidence.
Fetal monitoring during open heart surgery in pregnant women can detect acute fetal hypoxia, though healthy full-term delivery remains possible.
Lamb et al. (1981) studied this question. Fetal monitoring during heart-lung bypass for third-trimester open mitral valvotomy revealed acute fetal hypoxia, although both patients subsequently delivered healthy full-term infants.