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The Value of Exercise Test, Hotter Monitoring, and Programmed Electrical Stimulation in Detection of Ventricular Arrhythmias in Patients with Hypertrophic Cardiomyopathy
Author(s) -
JANSSON K.,
DAHLSTRÖM U.,
KARLSSON E.,
NYLANDER E.,
WALFRIDSSON H.,
SONNHAG C.
Publication year - 1990
Publication title -
pacing and clinical electrophysiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.686
H-Index - 101
eISSN - 1540-8159
pISSN - 0147-8389
DOI - 10.1111/j.1540-8159.1990.tb02025.x
Subject(s) - medicine , cardiology , interventricular septum , asymptomatic , hypertrophic cardiomyopathy , ventricular fibrillation , ventricular tachycardia , electrocardiography , qt interval , cardiomyopathy , heart failure , ventricle
To determine the best way to detect serious ventricular arrhythmia in patients with hypertrophic Cardiomyopathy (HCMJ, 15 patients with HCM performed an exercise test, had Holter monitoring during 24 hours, and programmed electrical stimulation (PES) in a randomized order, and the presence and type of ventricular arrhythmia was noted. During exercise testing, only one patient demonstrated ventricular tachycardia (VT) just prior to the test. By Holter monitoring, four patients had short episodes of asymptomatic VT. PES, using up to three extrastimuli induced VT or ventricular fibrillation (VF) in ten patients including those with VT during exercise testing and Holter monitoring. There were no differences between patients with and without ventricular arrhythmia during PES regarding age, left ventricular outflow obstruction, thickness of interventricular septum, interventricular septum/posterior wall thickness ratio, corrected QT interval, or the amplitude of the R wave in lead aVR in electrocardiography. Our results indicate that inducible VT/VF during PES is a common finding in patients with HCM. Twenty‐four hour Holter monitoring was superior to exercise testing in revealing serious ventricular arrhythmia in those patients.