Doubling of the ventricular rate by interpolated junctional extrasystoles resembling supraventricular tachycardia.
PACE-PACING AND CLINICAL ELECTROPHYSIOLOGY(2010)
Abstract
The intervals separating the junctional extrasystoles tended to be quite fixed, thus conforming to the pattern of junctional parasystole with an intrinsic rate very close to the rate of the dominant sinus rhythm. The paroxysms of tachycardia were transient, lasting a few seconds to 3.5 minutes. The onset and termination of the paroxysms were completely unpredictable and appeared unrelated to any change in the basic sinus rate or other identifiable mechanism. In only one case, case 7, the concept of dual ventricular response appeared tenable. However, as will be discussed later, the mechanism of junctional parasystole was found to be physiologically more acceptable. (PACE 2010; 945-949).
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Key words
electrocardiogram,SVT
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