Skip to main content
. 2014 Jan 10;306(5):H718–H729. doi: 10.1152/ajpheart.00697.2013

Table 1.

Demographic and echocardiographic data

NIDCM Patients Control Subjects P Value
No. of subjects 61 61
Sex, no. of subjects 0.4
    Men 33 38
    Women 28 23
Age, yr 56 ± 12 58 ± 13 0.4
Heart rate, beats/min 66 ± 13 64 ± 13 0.4
QRS duration > 120 ms
    No. of subjects 31 0
    Percent 51 0
LV chamber
End-diastolic volume, ml 163 ± 77 84 ± 22 <0.0001
End-systolic volume, ml 122 ± 71 31 ± 9 <0.0001
Stroke volume, ml 41 ± 15 53 ± 15 <0.0001
Ejection fraction 0.27 ± 0.09 0.63 ± 0.05 <0.0001
LV mass, g 215 ± 73 129 ± 35 <0.0001
Long-axis diastolic diameter, cm 9.2 ± 1.1 8.3 ± 0.8 <0.0001
Short-axis diastolic diameter, cm 6.0 ± 1.0 4.5 ± 0.5 <0.0001
Sphericity index 0.7 ± 0.1 0.5 ± 0.1 <0.0001
Vortex formation time 1.43 ± 0.83 3.95 ± 1.78 <0.0001
Conventional Doppler
Mitral regurgitation III–IV/IV
    No. of subjects 22 0
    Percent 36 0
Isovolumic relaxation time, ms 117 ± 37 94 ± 25 0.002
E wave velocity, m/s 0.65 ± 0.23 0.66 ± 0.14 0.79
A wave velocity, m/s 0.67 ± 0.23 0.64 ± 0.18 0.32
E/A 1.07 ± 0.67 1.13 ± 0.46 0.57
E wave deceleration time, ms 163 ± 52 198 ± 52 0.0003
e′ wave velocity, m/s 0.06 ± 0.02 0.10 ± 0.03 <0.0001
E/e′ 13 ± 6 7 ± 2 <0.0001
Diastolic intraventricular pressure gradients
Total early DIVPD, mmHg 1.1 ± 0.4 1.1 ± 0.6 0.78
Inertial early DIVPD, mmHg 1.5 ± 0.5 1.6 ± 0.6 0.65
Convective early DIVPD, mmHg −1.3 ± 0.7 −1.0 ± 0.6 0.02
Late DIVPD, mmHg 1.4 ± 0.5 0.7 ± 0.5 <0.0001

NIDCM, nonischemic dilated cardiomyopathy; LV, left ventricular; DIVPD, diastolic intraventricular pressure difference.