Table 2 Preoperative ultrasound data.

From: Case-control study on atrial electromechanical coupling time in patients with new-onset postoperative atrial fibrillation

Variable

Non -POAF (n = 78)

POAF (n = 38)

t

P

LAD(mm)

37.37 ± 4.80

38.37 ± 4.06

−1.102

0.273

LVIDd(mm)

46.97 ± 5.38

47.16 ± 5.64

−0.170

0.865

LVIDs(mm)

33.62 ± 5.51

33.89 ± 5.30

−0.260

0.796

Em(cm/s)

74.36 ± 25.05

74.74 ± 21.15

−0.080

0.936

Am(cm/s)

80.77 ± 19.99

81.84 ± 25.56

−0.247

0.805

Et(cm/s)

50.46 ± 11.10

50.00 ± 10.13

0.216

0.829

At(cm/s)

49.29 ± 9.93

47.89 ± 9.63

0.720

0.473

Em/Am

0.96 ± 0.38

1.01 ± 0.44

−0.555

0.580

Et/At

1.05 ± 0.26

1.08 ± 0.28

−0.554

0.581

Em´(cm/s)

7.62 ± 1.90

7.05 ± 1.64

1.561

0.121

Am´(cm/s)

10.32 ± 2.47

9.47 ± 2.51

2.917

0.088

Sm´(cm/s)

8.67 ± 2.09

7.95 ± 2.00

1.766

0.080

Ei´(cm/s)

5.73 ± 1.38

5.11 ± 1.29

2.336

0.021

Ai´(cm/s)

8.99 ± 1.62

8.08 ± 1.68

2.794

0.006

Si´(cm/s)

7.33 ± 1.56

6.87 ± 1.58

1.500

0.136

Et´(cm/s)

8.85 ± 2.17

8.47 ± 2.29

0.851

0.396

At´(cm/s)

13.85 ± 2.38

13.87 ± 2.79

−0.045

0.964

St´(cm/s)

12.08 ± 2.44

11.95 ± 2.20

0.277

0.782

LVEDV(ml)

106.13 ± 27.95

108.26 ± 29.38

−0.380

0.705

LVESV(ml)

48.28 ± 20.69

49.50 ± 19.24

−0.304

0.761

LVEF(%)

55.42 ± 7.23

55.26 ± 6.06

0.118

0.907

HR(times/min)

69.85 ± 11.96

68.34 ± 10.79

0.656

0.513

SPAP(mmHg)

36.92 ± 7.23

37.58 ± 7.08

−0.462

0.645

P-ALA (ms)

83.94 ± 9.92

93.16 ± 13.11

−4.216

<0.001

P-AIAS (ms)

65.42 ± 8.73

69.05 ± 11.01

−1.925

0.057

P-ARA (ms)

56.19 ± 9.36

57.74 ± 11.22

−0.733

0.466

TLA (ms)

18.51 ± 9.30

24.11 ± 8.95

−3.076

0.003

TRA (ms)

9.23 ± 4.79

11.32 ± 6.63

−1.731

0.089

  1. P-ALA: the AEMCT at the left atrial lateral wall of the mitral annulus; P-AIAS: the AEMCT of the interatrial septal annulus; P-ARA: the AEMCT at the right atrial lateral wall of the tricuspid annulus; TLA: electromechanical coupling conduction time (T) in the LA; TRA: electromechanical coupling conduction time (T) in the RA.