THE electrocardiographic picture of prolonged QRS-complex duration with short PR interval was the subject of isolated reports 1,2 until Wolff, Parkinson and White 3 described the clinical syndrome of ...
The rhythm is irregular, but the long intervals are the same (↔) and the short intervals (┌┐) are the same. One premature QRS complex (↑) is observed. Therefore, the rhythm is regularly irregular. The ...
The diagnosis is normal sinus rhythm, interpolated premature ventricular complexes (PVCs) in a trigeminal pattern, retrograde concealed conduction, intraventricular conduction delay, and old inferior ...
Cardiac-resynchronization therapy (CRT) reduces morbidity and mortality in chronic systolic heart failure with a wide QRS complex. Mechanical dyssynchrony also occurs in patients with a narrow QRS ...
This wide QRS complex tachycardia has a typical left bundle branch block pattern, but two things give the clue that this is ventricular tachycardia. There is a fusion beat (second from left) present ...
This ECG occurred in the setting of a large pericardial effusion causing cardiac tamponade. The pericardial effusion dampens the electrical signal on the ECG causing low voltage to be present (see Low ...