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Authors: '''A.A.M. Wilde''' and '''H.L. Tan''', Cardiologists, AMC, Amsterdam, The Netherlands | Authors: '''A.A.M. Wilde''' and '''H.L. Tan''', Cardiologists, AMC, Amsterdam, The Netherlands | ||
The ECG shows a sinus rhythm of 100 beats/min. | |||
The electrical axis is intermediate (positive QRS | The ECG shows a sinus rhythm of 100 beats/min. The electrical axis is intermediate (positive QRS complexes in leads I and aVF). The PQ interval is slightly prolonged; the QRS width and morphology are normal. The ST-T segment looks normal and the QT interval is certainly not prolonged. There are two episodes of tachycardia with four broad QRS complexes and two isolated broad complexes with a similar morphology as the initiating beats of the tachycardia. The first two episodes have a changing morphology resembling torsades de pointes (TdP) and pointing to a ventricular origin. However, there are four important differences from what is usually referred to as TdP. | ||
complexes in leads I and aVF). The PQ interval is | |||
slightly prolonged; the QRS width and morphology are | |||
normal. The ST-T segment looks normal and the QT | |||
interval is certainly not prolonged. | |||
There are two episodes of tachycardia with four | |||
broad QRS complexes and two isolated broad | |||
complexes with a similar morphology as the initiating | |||
beats of the tachycardia. The first two episodes have a | |||
changing morphology resembling torsades de pointes | |||
(TdP) and pointing to a ventricular origin. However, | |||
there are four important differences from what is | |||
usually referred to as TdP. | |||
#There is no long QT interval and | #There is no long QT interval and |