The evaluation of systolic time intervals (STI) for scientific purposes is tedious work which requires personal interest and some experience. The recommendations concerning the number of cycles to be evaluated are still a matter of discussion (1–4). Up to 20 consecutive cycles have to be measured for heart rate (HR) corrections (5). Automated data processing allows the standardization of measurements and the evaluation of large groups of patients. This report describes a method of recording and evaluating STIs by digital computer.

The effort ECG is one of the most useful and most commonly employed methods for the early diagnosis of coronary disease in patients with a normal ECG at rest. Perfection of a computerised method for this purpose is reported. An effort test is run on the cyclergometer and the ECG is read for 2 min at rest, during the test, and for 3 min afterwards. The chest bipolar leads are used. The diagnostic possibilities are greatly improved by computerisation and interpretation of the effort ECG.

Bipolare Brustwandableitungen (BPA) sind, insbesondere im Bereich der Intensivüberwachung, seit langem weit verbreitet. Der Grund hierfür liegt in der wenig problematischen Elektrodenfixierung am Thorax sowie in ihrer geringen Störanfälligkeit.