This rhythm strip was taken from a 41-year-old male with lymphoma. He had a 5-day history of substernal chest pain, which was increased by lying down and decreased by sitting up and leaning forward.

We have had several cases in which the presenting rhythm was either unavailable or not communicated to hospital providers. In one case, a 25-year-old patient with a reported pulseless, wide-complex ...

Is there a simple way to differentiate a supraventricular tachycardia from a ventricular, wide QRS tachycardia on a rhythm strip? The simplest initial approach is to look at the lead with the most ...

The underlying rhythm is atrial fibrillation. The first three and the last two QRS complexes (+) are regular (↔) at a rate of 38 beats/min. The fourth and fifth QRS complexes (^) have different RR ...