Time intervals and myocardial performance index by tissue Doppler imaging

Abstract

The application of tissue Doppler imaging (TDI) has shown remarkable growth in clinical practice during the past few years, especially, in risk stratification of patients with coronary heart disease or heart failure (systolic and diastolic). Myocardial performance index (MPI) is a Doppler echocardiographic parameter defined as the sum of the isovolemic contraction and relaxation times divided by the ejection time. It is considered as a reliable parameter to assess global left ventricular function. Cardiac time intervals and MPI have also been found as new applications in diagnosing cardiotoxicity from chemotherapy, COPD, valvular heart disease, pulmonary hypertension and endocrinopathies.

Short‐term effects of levosimendan on strain/strain rate markers in patients with nonischemic dilated cardiomyopathy

“…27 Recent clinical studies also revealed that levosimendan does not cause any deterioration in diastolic function. 30 MPI decreases with increasing myocardial performance. The usefulness of MPI in the evaluation of systolic and diastolic function is well-known.…”

Tissue Doppler Imaging in Coronary Artery Diseases and Heart Failure

“…Consequently, the accuracy of the results may be compromised by heart rate fluctuations. Tissue Doppler echocardiography enables us to simultaneously measure both the diastolic and systolic intervals from the myocardium [6]. …”

“…In the search for better selection criteria for CRT, it has been shown that patients with LV dyssynchrony have a higher likelihood of a positive response to CRT [6]. …”

Treatment with atorvastatin is associated with a better prognosis in chronic heart failure with systolic dysfunction: results from The Daunia Heart Failure Registry

“…TDI can be used to measure systolic time (St) and ejection time (ET) intervals in a noninvasive, geometrically independent, easily applicable fashion [1, 2]. Few authors, however, have evaluated these intervals in CHF patients [3, 4].…”