[The diagnostic value of delta-R and delta-Q as positive criteria of the ergometry test in a group of patients with angina pectoris of effort].

ECG-exercise tests were performed in 29 patients affected by effort chest pain. All patients underwent coronary angiography and/or revealed positive results in the cycloergometer effort test. The aim of the study was to evaluate ultrasonic variations in the R and Q waves due to maximal effort, so as to increase the information provided by the effort ECG.