title: [Clinical and electrocardiographic aspects of mitral valve prolapse].
abstract: Group sex and age, symptoms, ST segment, T wave, QT interval and PR interval abnormalities on the EKG, as whereas cardiac arrhythmias were analysed in two groups of patients from the cardiology outpatient clinics: patients from group I (n = 63) had and echocardiographic diagnosis of mitral valve prolapse (MVP), whereas patients from group II (n = 63) had a normal echocardiogram. Women exceeded men in number in both groups, and the female/male ratio was 2.5:1 and 1.5:1 in groups I and II, respectively. The age range in group I was 54 years (15-69) with a mean of 29.3 +/- 10.8 years, whereas group II had an age range of 49 years (9-58) and a mean of 26.5 +/- 10.1 years. Palpitations, atypical precordial pain and dyspnea were the most frequent presenting symptoms in both groups, all been present in 52 (88.2%) of the patients from group I and in 45 (71.5%) from group II. ST and T abnormalities occurred in 2 (4%) patients from group I and in 8 (13%) from group II. The PR interval was equal to or shorter than 0.20s in all cases. The corrected QT interval (Q-Tc) was prolonged in 2 (4%) patients from group I and in 1 (1.5%) from group II. The tachyarrhythmias as a whole, when analysed through the conventional 12-lead EKG, were found in 17 (31.5%) of the group I patients and in 10 (16.5%) of the patients from group II. Ventricular premature depolarizations were detected in 12 (22%) patients from group I and in 8 (13.5%) from group II (p greater than 0.05).(ABSTRACT TRUNCATED AT 250 WORDS)
authors.forename: L C
authors.initials: LC
authors.lastname: Thiago
authors.forename: E
authors.initials: E
authors.lastname: Broering
authors.forename: M
authors.initials: M
authors.lastname: de Patta
authors.forename: M E
authors.initials: ME
authors.lastname: Kowalski
authors.forename: F C
authors.initials: FC
authors.lastname: Heinzen
authors.forename: L E
authors.initials: LE
authors.lastname: Thiago
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D004452:Echocardiography; D004562:Electrocardiography; D005260:Female; D006339:Heart Rate; D006801:Humans; D008297:Male; D008875:Middle Aged; D008945:Mitral Valve Prolapse / Q000503:physiopathology*; D012189:Retrospective Studies
vernacular_title: Aspectos clínicos e eletrocardiográficos do prolapso da valva mitral.