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.

Sometimes, an abnormal EKG reading is a normal variation in a person’s heart rhythm. In other cases, it may be due to an underlying heart condition or a reaction to medication. An electrocardiogram ...

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 ...

While the traditional Holter concept has been slow to advance, other rhythm recording options are available. The alternatives and various features are summarized in Table 1. This includes the event ...

There are only a few sinus rhythm QRS complexes available to examine on this ECG. Using lead V1 an incomplete right bundle branch block is seen. A prolonged QT interval is present that extends all the ...

The ECG shows regular P waves at 60 beats per minute (bpm) with no conduction to the ventricles. The ventricular rate is about 70 bpm with QRS duration of 0.20 and a left bundle branch block (LBBB) ...