title: [Arrhythmia in patients with hypertrophic cardiomyopathy during an exercise test with 24-hour Holter monitoring].
abstract: Thirty patients with hypertrophic cardiomyopathy (HCM), (20 men and 10 women, age 16-55, mean 37 +/- 8 years) underwent exercise test done on bicycle twice to estimate effort tolerance before drugs. In all patients a 24-hour ekg Holter monitoring was also performed. During exercise test heart rhythm disturbances were noticed in 2 patients (7%). One had a 2-second sinus arrest, in the other ventricular bigeminity was observed. Twenty two patients (79%) had rhythm or conduction disturbances in Holter monitoring. In 2 (7%) rhythm generation and conduction abnormalities, in 7 (23%)-supraventricular and in 13 (43%)-ventricular arrhythmia. Ten of them (33%) had Lown class IVa and IVb arrhythmia. In conclusion we suggest that exercise test done on bicycle ergometer is a safe method to estimate effort tolerance in patients with HCM and usually does not induce rhythm disturbances. Holter monitoring is more effective than exercise test in revealing cardiac arrhythmia.
authors.affiliation: II Katedry i Kliniki Kardiologii Slaskiej AM w Zabrzu.
authors.forename: E
authors.initials: E
authors.lastname: Nowalany-Kozielska
authors.forename: A
authors.initials: A
authors.lastname: Wycisk
authors.forename: M
authors.initials: M
authors.lastname: Tendera
authors.forename: B
authors.initials: B
authors.lastname: Kuśnierz
authors.forename: J
authors.initials: J
authors.lastname: Foremny
mesh_terms: D000293:Adolescent; D000328:Adult; D001145:Arrhythmias, Cardiac / Q000175:diagnosis* / Q000209:etiology; D002312:Cardiomyopathy, Hypertrophic / Q000150:complications*; D015716:Electrocardiography, Ambulatory; D005080:Exercise Test; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged
vernacular_title: Zaburzenia rytmu u chorych z kardiomiopatia przyrostowa w próbie wysiłkowej i 24-godzinnym monitorowaniu ekg metoda Holtera.