• Can J Anaesth · Oct 2021

    Review Case Reports

    The role of echocardiography in amniotic fluid embolism: a case series and review of the literature.

    • Camille Simard, Stephen Yang, Maral Koolian, Roberta Shear, Lawrence Rudski, and Jed Lipes.
    • Department of Medicine, McGill University, Montreal, QC, Canada.
    • Can J Anaesth. 2021 Oct 1; 68 (10): 1541-1548.

    PurposeAmniotic fluid embolism (AFE) is a rare, but often fatal condition characterized by sudden hemodynamic instability and coagulopathy occurring during labour or in the early postpartum period. As the mechanisms leading to shock and the cardiovascular effects of AFE are incompletely understood, the purpose of this case series is to describe how AFE presents on echocardiography and review limited reports in the literature.Clinical FeaturesWe describe three cases of AFE at the Jewish General Hospital, a tertiary care centre in Montreal, Canada. All cases met the Clark diagnostic criteria, which comprise 1) sudden cardiorespiratory arrest or both hypotension and respiratory compromise, 2) disseminated intravascular coagulation, 3) clinical onset during labour or within 30 min of delivery of the placenta, and 4) absence of fever. Two patients had a cardiac arrest and the third developed significant hypotension and hypoxia. In all patients, point-of-care echocardiography at the time of shock revealed signs of right ventricular failure including a D-shaped septum, acute pulmonary hypertension, and right ventricular systolic dysfunction.ConclusionThis case series and literature review of AFE emphasizes the importance of echocardiography in elucidating the etiology of maternal shock. The presence of right ventricular failure may be considered an important criterion to diagnose AFE.© 2021. Canadian Anesthesiologists' Society.

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