PT - JOURNAL ARTICLE AU - Sharratt, G P AU - Danta, G AU - Carson, P H TI - Cardiac abnormality in polymyositis. AID - 10.1136/ard.36.6.575 DP - 1977 Dec 01 TA - Annals of the Rheumatic Diseases PG - 575--578 VI - 36 IP - 6 4099 - http://ard.bmj.com/content/36/6/575.short 4100 - http://ard.bmj.com/content/36/6/575.full SO - Ann Rheum Dis1977 Dec 01; 36 AB - Thirteen patients with polymyositis were investigated for the presence of cardiac disease by clinical examination, chest x-ray, electrocardiogram, and systolic time intervals. 5 patients had evidence of cardiac involvement. Compared with the other 8 patients, their polymyositis was more long-standing, more severe, and had remained active. Electrocardiogram usually showed arrhythmias and conduction disturbances, and 4 of the 5 patients had abnormal systolic time intervals indicating left ventricular dysfunction. Left ventricular involvement in polymyositis is more frequent than previously recognized and systolic time intervals are a simple, noninvasive method of detecting this.