To determine the correlation between echocardiographic diastolic parameters and invasively measured left ventricular end diastolic pressure in patients with heart failure with preserved ejection fraction- an observational, descriptive study. (CEAL-HFpEF study).

On the other hand on studying correlation between Tissue Doppler study and catheterization data, it was observed that a highly significant correlation was found between E/Ea. at all four longitudinal segments of the left ventricle ( r = −0.53, p < 0.05, n = 28 for lateral) ( r = −0.64, p < 0.05, n = 28 for septal) ( r = −0.57, p < 0.01, n = 28 for anterior), and ( r = −0.64, p < 0.05 n = 28 for posterior).

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