• Am J Emerg Med · Jan 2012

    Case Reports

    Patent foramen ovale appearance with association of left ventricular assist device and mechanical ventilation.

    • Vincent Minville, Nicolas Mayeur, Philippe Marty, Simon Méjean, Nicolas Boudou, and Michel Galinier.
    • Department of Anesthesia and Intensive Care, GRCB 48 IFR 150, Rangueil University Hospital, Avenue Jean Poulhès, Toulouse, France. philippemarty@hotmail.com
    • Am J Emerg Med. 2012 Jan 1;30(1):259.e1-3.

    AbstractWe report on a 62-year-old man referred to the cardiac intensive care unit less than 24 hours after anterior ST-segment elevated myocardial infarction. The patient developed cardiogenic shock requiring elective intubation, vasopressor, and inotropic support. Emergency coronary angiography, revascularization, and insertion of an intraaortic balloon pump were performed. Nevertheless, the hemodynamic situation remained unstable, and a left ventricular assist device (LVAD) was inserted. Severe hypoxemia occurred several minutes after initiating the Impella Recover LD/LP 5.0 (Abiomed, Danvers, MA). Transesophageal echocardiography allowed diagnosis of patent foramen ovale. The shunt resulted from abnormal left-to-right pressure gradient due to left ventricular unloading and increased right ventricular afterload induced by mechanical ventilation. Transesophageal echocardiography was used to regulate both LVAD output and positive end-expiratory pressure settings to optimize oxygen transport. Because patent foramen ovale is common in humans, transesophageal echocardiography should be performed systematically after LVAD insertion.

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