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Medical Term:

supraventricular tachycardia


rapid heart rate due to a pacemaker anywhere above the ventricular level, sinus node, atrium, atrioventricular junction. The QRS complexes are always narrow unless there is rate-related aberrancy or preexisting intraventricular conduction delay.

© Copyright 2017 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.