Table 2 Preoperative features of constrictive pericarditis patients with and without low cardiac output after pericardiectomy

Atrial arrhythmia

27, 11.5%

11, 20.0%

11, 7.0%

0.007^*

3.32 (1.35, 8.17)

Pleural effusion

178, 84.0%

48, 87.3%

130, 82.8%

0.437

1.42 (0.58, 3.49)

Ascites

155, 73.1%

44, 80%

111, 70.7%

0.181

1.66 (0.79, 3.49)

Peripheral edema

183, 86.3%

47, 85.5%

136, 86.6%

0.828

0.91 (0.38, 2.19)

Anemia

50, 23.6%

14, 25.5%

36, 22.9%

0.704

1.15 (0.56, 2.34)

Renal dysfunction

38,16.1%

17, 30.9%

15, 9.6%

< 0.001^*

4.24 (1.94, 9.25)

Hypoalbuminemia

121, 47.8%

34, 61.8%

70, 44.6%

0.031^*

1.99 (1.06, 3.73)

Hyponatremia

23, 10.6%

14. 25.5%

8, 5.1%

< 0.001^*

6.36 (2.50, 16.20)

Hypokalemia

26, 10.3%

9, 16.4%

14, 8.9%

0.126

2.00 (0.81, 4.92)

Hepatomegaly

115, 54.2%

30, 54.5%

85, 54.1%

0.959

1.02 (0.55, 1.88)

Hyperbilirubinemia

173, 81.2%

46, 83.6%

127, 80.9%

0.651

1.21 (0.53, 2.74)

Coagulopathy

157, 74.1%

45, 81.8%

112, 71.3%

0.127

1.81 (0.84, 3.90)

Calcification

46, 21.7%

13, 23.6%

33, 21.0%

0.685

1.16 (0.56, 2.42)

LVEF (%)

64 ± 7

64 ± 9

64 ± 7

0.981

0 (− 3,3)

TR (m/s)

2.16 ± 0.32

2.19 ± 0.39

2.15 ± 0.30

0.462

0.04 (− 0.07, 0.14)

TAPSE (mm)

13 ± 4

12 ± 4

13 ± 3

0.672

− 1 (− 6,4)

IVC diameter(mm)

23 ± 3

23 ± 3

23 ± 3

0.914

0 (− 1,1)

E peak velocity variation (%)

29.6 ± 7.2

31.5 ± 7.5

28.7 ± 6.8

0.011^*

2.8 (0.7,5.0)

E/A

1.5 ± 0.5

1.3 ± 0.5

1.5 ± 0.5

0.076

− 0.2 (− 0.4, 0.0)

CVP (cmH₂O)

18 ± 5

20 ± 5

17 ± 4

< 0.001^*

3 (2,5)

CI (L•min⁻¹•m⁻²)

1.87 ± 0.45

1.67 ± 0.49

1.94 ± 0.42

< 0.001^*

− 0.27 (− 0.41, − 0.14)