Propranolol induced electrical and mechanical alternans in orthodromic reciprocating tachycardia.

Abstract

During an electrophysiological study in a patient with a concealed accessory connection, there was no evidence of electrical or mechanical alternans during tachycardia until propranolol was administered, but both forms of alternans developed with tachycardia of a slower rate following propranolol. Echocardiographic, arterial pressure, and electrocardiographic data obtained prior to and following propranolol administration are presented.

• Authors: J E Crosson, A Dunnigan
• Journal: Pacing and clinical electrophysiology : PACE (Pacing Clin Electrophysiol) Vol. 16 Issue 3 Pt 1 Pg. 496-500 (Mar 1993) ISSN: 0147-8389 [Print] United States
• PMID: 7681203 (Publication Type: Case Reports, Journal Article, Research Support, Non-U.S. Gov't)

Chemical References

• Propranolol

Topics

• Adolescent
• Cardiac Pacing, Artificial
• Echocardiography, Doppler
• Electrocardiography
• Heart Conduction System (drug effects, physiopathology)
• Humans
• Male
• Propranolol (pharmacology, therapeutic use)
• Pulse (drug effects, physiology)
• Tachycardia (diagnosis, drug therapy, physiopathology)