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Table 1 Clinical characteristics and 4D flow CMR data of patients with and without LBBB

From: Left ventricular kinetic energy as a marker of mechanical dyssynchrony in failing hearts with LBBB: a 4D flow CMR study

 

With LBBB (n = 11)

Without LBBB (n = 11)

P-value

Age (years)

61 ± 14

57 ± 15

0.599

Gender (female:male)

2:9

2:9

-

Heart rate (bpm)

71 ± 13

68 ± 10

0.551

LVEDV-index (ml/m2)

129 ± 48

115 ± 32

0.434

LVEF (%)

34 ± 9

36 ± 9

0.588

QRS duration (ms)

160 ± 20

104 ± 10

< 0.001

Volume (ml)

   

Direct flow

18.7 ± 10.5

25.7 ± 12.6

0.174

Retained inflow

54.5 ± 16.4

48.4 ± 16.6

0.393

Delayed ejection flow

48.7 ± 15.6

45.8 ± 11.6

0.631

Residual volume

119.7 ± 73.2

98.2 ± 63.3

0.471

KE/volume at ED (mJ/ml)

   

Direct flow

0.007 ± 0.003

0.013 ± 0.005

0.007

Retained inflow

0.008 ± 0.002

0.010 ± 0.004

0.079

Delayed ejection flow

0.010 ± 0.005

0.013 ± 0.005

0.128

Residual volume

0.004 ± 0.001

0.005 ± 0.002

0.563

  1. Mean ± SD. ED, end diastole; EDV, end-diastolic volume; EF, ejection fraction; KE, kinetic energy; LV, left ventricle