ABSTRACT
Imagine that you are the most senior physician in the hospital and you are asked at 3 a.m. to evaluate a patient with a wide complex rhythm. The task of making the correct diagnosis and prescribing the best treatment can be a source of fear and apprehension, or can be relatively a straightforward decision, if you know the cues and clues. This chapter will provide a concise approach to the diagnosis and acute management of cardiac arrhythmias.
