Sudden maternal hypoxemia during elective cesarean section in a woman with placenta previa.

There have been no reports regarding imaging-documented bronchospasm in patients with amniotic fluid embolism (AFE). In a woman with scheduled cesarean section for placenta previa, transient bronchospasm and pulmonary hypertension were documented explaining a sudden drop in SpO2. Mild AFE was the most likely diagnosis in this patient.