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Prognostic Value of Pulse-Wave Tissue Doppler Parameters in Patients With Systolic Heart Failure

      The aim was to study the prognostic value of left ventricular (LV) function using pulse-wave tissue Doppler imaging (TDI) in an ordinary population with heart failure (HF). One hundred fifty-six patients hospitalized for HF and LV ejection fraction ≤40% were examined using conventional echocardiography and pulse-wave TDI for the assessment of longitudinal LV function. Mitral annular systolic and early diastolic (e′) velocities were recorded from a mean of 4 annular sites from the apical 2- and 4-chamber views. Noninvasive LV filling pressure was calculated from the ratio between transmitral early inflow velocity (E) and e′. All patients were followed up for 2 years, and data from the National Registry of Deaths were collected. Mean LV ejection fraction was 24.7 ± 7.2%. TDI recordings showed a mean mitral annular systolic velocity of 5.0 ± 1.0 cm/s and e′ velocity of 6.2 ± 1.9 cm/s. E/e′ ratio was 14.1 ± 4.8. Thirty patients (19%) had atrial fibrillation. During follow-up, 27 patients (17%) died of a cardiovascular cause. Multivariate analysis showed that only E/e′ ratio and age were predictors of cardiovascular mortality. A cut-off value for E/e′ ratio >13 had sensitivity of 84% and specificity of 45% to identify patients who died within 2 years of cardiac reasons. In conclusion, in the acute stage of HF, E/e′ ratio is a strong independent predictor of long-term cardiovascular mortality in an ordinary population with HF and systolic dysfunction. Systolic and diastolic velocities had no independent prognostic value.
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