ABSTRACT
Background: Noninvasive assessment of diastolic filling by Doppler echocardiography provides important information about left ventricular (LV) status in selected subsets of patients. This study was designed to assess whether the lateral mitral annular velocity as assessed by tissue Doppler imaging is associated with invasive measures of diastolic LV performance in patients with diastolic and systolic heart failure. Aim of the study was to compare the diagnostic accuracy of lateral mitral annular E/E? as an estimate of LV filling pressure with invasive LVEDP measurement in subjects with systolic or purely diastolic heart failure.Methods: Total 100 patients were studied, 50 patients with diastolic heart failure and 50 patients with systolic heart failure in patients undergoing diagnostic coronary angiogram. Detailed 2D Echocardiography, Trans mitral Doppler and Tissue Doppler velocities of lateral mitral annulus was obtained. The ratio of peak mitral velocity (E) to lateral mitral annular velocity (E?) by TDI (E/E?) was calculated.Results: The ratio of E/E? in diastolic group was 13.4�9 and in systolic group it was 13.7�2. The mean LVEDP in diastolic heart failure patients was 14.3�5 and 14.2�9 in systolic heart failure patients. The ratio of E/E? showed a better correlation with LVEDP. E/E? <8 accurately predicted normal LVEDP, and E/E? >15 identified increased LVEDP ?15mmHg.Conclusions: E/E? is a reliable estimate of LV filling pressures in subjects with systolic and diastolic heart failure. In subjects with diastolic heart failure, E/E? seems helpful to identify those with truly elevated LV filling pressures. In patients with diastolic heart failure and normal E/E?, a search for other causes of symptoms (pulmonary disease, obesity and so forth) may be warranted.
ABSTRACT
Background: Aortic pulse pressure is a significant marker of cardiovascular morbidity independently of mean blood pressure and pulse pressure of 60 mm Hg should be considered as the threshold at risk both in normotensives and hypertensives. Coronary perfusion is dependent on diastolic blood pressure and patients with CAD may be susceptible to the adverse effects of low diastolic blood pressure. This study conducted to examine the relation between central aortic pulse pressure and the prevalence and extent of CAD.Methods: A cross sectional, hospital-based study conducted in Sri Jayadeva Institute of Cardiovascular Sciences and Research, Bengaluru, among patients undergoing diagnostic coronary angiography.Results: Risk factors like Diabetes, Hypertension, Dyslipidemia and smoking rates were significantly higher in patients with PP of >60 mmHg (p<0.01). In the first group, the ratio of having normal coronaries is higher 61.9% vs 38% and diseased coronaries was lower when compared to the other group 38% vs 98%. In patients with aortic pulse pressure >60 mmHg, 4 patients had left main coronary artery (LMCA) disease, 20 patients had single vessel disease, 11 patients had two vessel disease and 20 patients had triple vessel disease.Conclusions: In this study it was demonstrated aortic pulse pressure of more than 60 mm Hg is associated with significant CAD.