Systolic time intervals before and after haemodialysis

We investigated changes of haemodynamics during haemodialysis in 107 patients by noninvasive measurement of systolic time intervals. Heart rate and preejection period index increased and systolic and diastolic blood pressure, left ventricular ejection time and isovolumic contraction time decreased. We found, that if the pre-dialysis ejection fraction (EF) was more than 55 per cent, post-dialysis EF decreased by about 10 per cent. However if pre-dialysis EF was less than 55 per cent, post-dialysis EF increased by five per cent. Regarding cardio-thoracic-ratio, Sokolow-Lyon-Index (SLI) and repolarisation disorders we found the most remarkable decrease in EF in patients with normal sized hearts with enlarged SLI and repolarisation disorders.