Electrocardiogram at rest, blood pressure, systolic intervals (PEP/LVET), cardiothoracic ratio and circulation time were evaluated in 222 sarcoidotic subjects without cardiac symptoms and with no past or present history of cardiac disease. Very few, slight alterations were observed and were probably not the result of sarcoidotic myocardial involvement. Abnormalities distribution according to stage on the basis of chest-x-rays findings and the duration of sarcoidosis did not appear significantly different. Prospective study is being undertaken to determine which of the observed abnormalities may represent precursors or symptoms of sarcoidotic cardiac involvemenet.