title: [Disorders of cardiac rhythm and the changes in Q-T interval in mitral valve prolapse syndrome].
abstract: To study the incidence and nature of cardiac arrhythmias and the changes in the corrected Q-T interval, 60 patients with the prolapsed mitral valve syndrome were examined. All the patients underwent resting ECG and leg isometric exercise. 24-hour ECG monitoring was performed in 48 patients. The latter technique was found to be the most informative tool for detecting cardiac arrhythmias (66.8%). Prolonged corrected Q-T interval (more than 440 msec) was more frequently revealed in leg isometric exercise (41.6%) than in resting ECG (26.6%) and 24-hour monitoring (29.2%). Its degree was directly related to the severity of cardiac arrhythmias in patients with the prolapsed mitral valve syndrome.
authors.forename: R F
authors.initials: RF
authors.lastname: Abdullaev
authors.forename: E B
authors.initials: EB
authors.lastname: Gel'fgat
authors.forename: Z M
authors.initials: ZM
authors.lastname: Babaev
authors.forename: T M
authors.initials: TM
authors.lastname: Akhmedov
authors.forename: G A
authors.initials: GA
authors.lastname: Tariverdieva
mesh_terms: D000293:Adolescent; D000328:Adult; D004562:Electrocardiography / Q000379:methods; D015716:Electrocardiography, Ambulatory; D005080:Exercise Test; D005260:Female; D006801:Humans; D008133:Long QT Syndrome / Q000175:diagnosis* / Q000209:etiology; D008297:Male; D008875:Middle Aged; D008945:Mitral Valve Prolapse / Q000150:complications*; D012720:Severity of Illness Index; D013577:Syndrome; D013617:Tachycardia, Supraventricular / Q000175:diagnosis* / Q000209:etiology
vernacular_title: Narusheniia serdechnogo ritma i izmeneniia intervala Q-T pri sindrome prolabirovaniia mitral'nogo klapana.