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.