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Table 2 Diastolic parameters

From: Evaluation of diastolic function by three-dimensional volume tracking of the mitral annulus with cardiovascular magnetic resonance: comparison with tissue Doppler imaging

 

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*

  1. Data expressed as mean ± SD.
  2. 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.
  3. 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.
  4. *P < 0.05, †P < 0.10, ‡Patient classification based on echocardiography reference.
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Journal of Cardiovascular Magnetic Resonance

ISSN: 1532-429X

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