[The stress systolic time intervals in the diagnosis of ischaemic heart disease. Study of the recovery in patients with persistent ischemia (author's transl)]. / I tempi sistolici da sforzo nella diagnostica della cardiopatia ischemica.

ABSTRACT

The changes in systolic time intervals (STI) LVET, PEP/LVET) between rest conditions, maximal exercise and after seven minutes after upright bicycle stress test were measured in 31 consecutive subjects: 14 "control" normal subjects, and 17 subjects with ischemic heart disease. The purpose of this investigation was to evaluate the specificity and sensitivity of the stress - STI in the identification of patients with positive exercise ECG and of patients with markedly positive exercise ECG that shown a late recovery persistent ischemia. The changes of STI are different in the control group and in ischemic heart disease group pts with negative exercise stress test and pts with positive or markedly positive exercise ecg. In the literature the usefulness of stress STI in the diagnosis of coronary disease is not univocally accepted. Our results indicate that STI are not a parameters that have an available correlation ith the stress myocardial ischemia even at distance of haemodynamic variations of maximal exercise and recovery and in presence of late recovery persistent ischemia.