The diagnosis is sinus rhythm with interpolated premature ventricular complexes, in a trigeminal pattern, with retrograde concealed conduction. The rhythm is irregular, but there is a repeating ...

The diagnosis is normal sinus rhythm, WPW pattern, PACs in bigeminal pattern, and pseudo inferior wall infarction. The rhythm is irregular and there is a pattern of group beating (ie, two QRS ...

This is a challenging ECG in regards to determining if the wide QRS complex rhythm is from ventricular tachycardia or "SVT with aberrancy" such as AV nodal reentry tachycardia causing a rate-dependent ...

There is clearly a tachycardia with narrow QRS complexes indicating a supraventricular rhythm. The clues to the aetiology are the heart rate of almost exactly 150 / min and the saw tooth waves seen ...

In contrast, a narrow QRS complex of <0.12s suggests that cardiac rhythm originates in the atria or the atrioventricular junction (above the ventricles). This means that assessing the QRS complex in ...

After emergent cardiac catheterization and stent to the left anterior descending, she is noted to have a change in her rhythm intermittently (see ECG #2 below). What are the ECG findings and what ...

What's the source of the unusual electrocardiogram (ECG) findings in a patient presenting with dizziness and limb weakness? That's the mystery posed in a recent case report. The diagnostic challenge ...

A 70 year old man presents to the surgery with a history of exertional breathlessness and swelling of his ankles. An ECG was done as part of his diagnostic work up. What does the ECG show? A ...