A Narrow QRS Complex Tachycardia Sensitive to Isoptin
|Author(s)||A.A.M. Wilde, R.H. Bakker|
|These Rhythm Puzzles have been published in the Netherlands Heart Journal and are reproduced here under the prevailing creative commons license with permission from the publisher, Bohn Stafleu Van Loghum.|
|The ECG can be enlarged twice by clicking on the image and it's first enlargement|
A 54-year-old man presented with palpitations. He had no other symptoms. Physical examination revealed, with the exception of a fast regular heart rhythm (200 beats/min), no abnormalities. His ECG is shown in figure 1. Intravenous verapamil terminated the tachycardia and a second ECG (figure 2) was taken.
What is your diagnosis?