Table 2.

Diastolic parameters

	Normal diastolic function‡ (n = 62)	Diastolic dysfunction‡ (n = 62)	P
CMR mitral annulus sweep volume
Normalized peak sweep rate, early diastole (PSRE), s−1	7.72 ± 1.7	5.25 ± 1.38	<0.001*
Peak sweep rate, early diastole, cm3/s	117 ± 43	65 ± 28	<0.001*
Normalized peak sweep rate, atrial systole (PSRA), s−1	4.67 ± 1.38	6.56 ± 1.99	<0.001*
Peak sweep rate, atrial systole, cm3/s	70 ± 24	80 ± 29	0.031*
PSRE/PSRA ratio	1.82 ± 0.69	0.9 ± 0.44	<0.001*
Percentage sweep volume recovery, early diastole	69.09 ± 10.02	54.29 ± 12.37	<0.001*
Absolute sweep volume, early diastole, cm3	10.64 ± 4.1	6.83 ± 2.66	<0.001*
Absolute sweep volume/stroke volume, early diastole, %	11.17 ± 2.89	7.6 ± 2.21	<0.001*
Percentage sweep volume recovery, atrial systole	33.78 ± 9.92	49.1 ± 13.76	<0.001*
Absolute sweep volume, atrial systole, cm3	5.03 ± 1.72	6.01 ± 2.35	0.014*
Absolute sweep volume/stroke volume, atrial systole, %	5.41 ± 1.78	6.81 ± 2.24	0.014*
Normalized average sweep rate, early diastole, s−1	4.2 ± 1.02	2.53 ± 0.63	<0.001*
Normalized average sweep rate, mid-diastole, s−1	0.36 ± 0.71	0.87 ± 1.34	0.019*
Normalized average sweep rate, atrial systole, s−1	2.67 ± 0.94	3.88 ± 1.26	<0.001*
Sweep volume deceleration time (DTSV), ms	96.25 ± 36.56	144.19 ± 54.89	<0.001*
Sweep volume acceleration time (ATSV), ms	102.48 ± 35.03	114.2 ± 41.09	0.066†
50% Diastolic sweep volume recovery time (DSVRT50), %	15.58 ± 4	24.97 ± 11.03	<0.001*
Echocardiography
E, cm/s	84.47 ± 22.22	75.81 ± 25.08	0.020*
A, cm/s	59.45 ± 17.75	69.9 ± 22.7	0.005*
E/A	1.51 ± 0.51	1.22 ± 0.67	<0.001*
Deceleration time, ms	219 ± 48	230 ± 47	0.200
e′ septal, cm/s	10.14 ± 2.22	6.05 ± 1.4	<0.001*
a′ septal, cm/s	8.25 ± 1.89	8.98 ± 2.44	0.064†
e′/a′ septal	1.3 ± 0.41	0.75 ± 0.34	<0.001*
e′ lateral, cm/s	14.59 ± 3.95	8.1 ± 2.56	<0.001*
a′ lateral, cm/s	9.51 ± 2.95	10.4 ± 3.75	0.141
e′/a′ lateral	1.7 ± 0.71	0.89 ± 0.44	<0.001*
E/e′ (average)	7.1 ± 2.02	11.47 ± 6.26	<0.001*

Data expressed as mean ± SD.

Peak and average sweep rates were normalized to end-systolic sweep volume. Percentage sweep volume recovery measured the proportion of recovery in reference to end-systolic sweep volume. 50% diastolic sweep volume recovery time was normalized to RR interval.

E = peak early mitral inflow velocity; A = peak late mitral inflow velocity; e′ = early diastolic mitral annular velocity; a′ = late diastolic mitral annular velocity; MA = mitral annulus.

*P < 0.05, †P < 0.10, ‡Patient classification based on echocardiography reference.