Influence of right ventricular site of stimulation and infarct location on the inducibility of ventricular tachycardia in patients with coronary artery disease.

Abstract:

:No prior studies have evaluated the relationship between the site of right ventricular stimulation, the site of prior infarction, and the inducibility of ventricular tachycardia (VT). This study was performed to determine if the location of pathologic Q waves influences the inducibility of VT at various right ventricular sites in patients with coronary artery disease (CAD) and a history of myocardial infarction (MI). In 30 patients with a history of sustained, monomorphic VT, CAD, prior MI, and pathologic Q waves, programmed ventricular stimulation was performed at the right ventricular apex, septum, and outflow tract, in random order. There was electrocardiographic evidence of an MI that was inferior in 11 patients, anterior in 10 patients, and both inferior and anterior in 9 patients. Sustained, monomorphic VT was induced in 27 of 30 patients (90%). There were no significant differences among the three sites in the rate of inducibility of VT. The rate of inducible VT at each of the three right ventricular sites was not affected by the location of prior infarction. In conclusion, among patients with sustained, monomorphic VT, CAD, and a history of MI, the incidence of inducible sustained, monomorphic VT is not influenced by the location of prior infarction, regardless of whether programmed ventricular stimulation is performed at the right ventricular apex, septum, or outflow tract.

journal_name

J Electrocardiol

authors

Harvey M,Goyal R,Knight BP,Man KC,Strickberger SA,Morady F

doi

10.1016/s0022-0736(98)90012-7

subject

Has Abstract

pub_date

1998-10-01 00:00:00

pages

278-80

issue

4

eissn

0022-0736

issn

1532-8430

pii

S0022073698000326

journal_volume

31

pub_type

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