Janet Poponick, MD

Torsades de pointes, or polymorphic ventricular tachycardia, seen on ECG includes wide complex QRS morphology tachycardia, axis deviation of the QRS complexes around baseline.

A 62-year-old woman was found on thefloor of her bathroom at home with herwheelchair partially on top of her.She was unresponsive except to painfulstimulus.

A 26-year-old otherwise healthy man presents to the emergency department with a 3- to 4-hour history of left-sided chest pain. The pain is pleuritic and accompanied by nausea and discomfort in the left arm.

A succinct review of hyperkalemia . . . its various causes, clinical manifestations and consequences, ECG findings, and treatment approaches.

A 23-year-old man presents to theemergency department (ED) withacute chest discomfort, which startedin the morning. He describes the discomfortas more akin to palpitationsthan to actual pain. The discomfortis midsternal, nonradiating, nonpleuritic,and associated with dyspnea; itis neither exertional nor positional.There is no viral prodrome.