Pheochromocytoma should be considered in young patients who have acute cardiac decompensation, even
Case ReportIn January 2011, a 38-year-old black woman presented at another hospital with cardiogenic shock (left ventricular ejection fraction [LVEF], <0.15) that did not respond to the placement of an intra-aortic balloon pump. She was transferred by helicopter to our cardiac center for further care. The patient then experienced 2 cardiac arrests and needed cardiopulmonary resuscitation for 5 minutes. A TandemHeart ® Percutaneous Ventricular Assist Device (CardiacAssist, Inc.; Pittsburgh, Pa) was inserted emergently. A 12-lead electrocardiogram confirmed atrial tachycardia (Fig. 1A). A trial of intravenous metoprolol caused a complete cessation of blood flow from the TandemHeart device. The patient responded to glucagon and intravenous fluids. Comprehensive electrophysiologic studies revealed multifocal atrial tachycardia and junctional ectopic tachycardia, which were treated with radiofrequency ablation of the atrioventricular (AV) node and the placement of a temporary pacemaker. This treatment dramatically stabilized the patient's hemodynamic status and within a few hours improved her LVEF to 0.25-0.30. Consequently, the patient was weaned off vasopressors, and the TandemHeart was removed. The patient subsequently developed a junctional escape rhythm at 78 beats/min and AV dissociation (Fig. 1B). Her blood pressure was maintained in the normal range after tapering of the vasopressors.