A woman in her 30s with active bulimia was brought by ambulance to the emergency department after a syncopal event that followed 1 hour of palpitations and intermittent lightheadedness. When emergency responders arrived, the patient was responsive but groggy. An electrocardiogram (ECG) in the field demonstrated a regular wide complex tachycardia. En route to the hospital, 6 mg of adenosine followed by 12 mg of adenosine were administered intravenously, without a change in her rhythm.
Marano PJ, Lee A, Lee BK. Wide Complex Tachycardia in a Woman in Her 30s With Electrolyte Derangements. JAMA Cardiol. 2020;5(2):230–231. doi:10.1001/jamacardio.2019.4838
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