Clinical and echocardiographic differences in patients with dilated cardiomyopathy in the frame depending preserved left ventricular contractile reserve

Results Preserved contractile reserve had 19 patients (34.5%). Patients with and without preserved left ventricular contractile reserve were no different in age, gender, disease duration, NYHA class, presence of atrial fibrillation and left bundle branch block. Patients with preserved contractile reserve had a smaller end-diastolic (62.95 ± 5.64 vs. 68.58 ± 7.53 mm, p = 0.006) and end-systolic left ventricular dimension (47.63 ± 6.06 vs. 55.39 ± 8.13 mm, p = 0.001), lower left ventricular mass index (159.68 ± 31.90 vs. 197.06 ± 54.04 g/m2, p = 0.008), a higher slope Vp measured by color M-mode (50.66 ± 17.28 vs. 43.53 ± 18.73 cm/s, p = 0.024), higher systolic mitral annular displacement measured by tissue Doppler (6.02 ± 1.67 vs. 4.88 ± 1.26 cm/s, p = 0.006), smaller end-diastolic (70.94 ± 24.45 vs. 94.92 ± 33.13 ml/m2, p <0.001) and end-systolic left ventricular volume index (52.71 ± 22.52 vs. 78.71 ± 33.04 ml/m2, p <0.001), higher left ventricular ejection fraction (27.10 ± 6.83% vs. 18.67 ± 7.28%, p <0.001) and lower wall motion score index (2.19 ± 0:23 vs. 2:46 ± 0:28, P = 0.001).