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Table 2 The characteristics of included patients

From: Analysis of risk factors of low cardiac output syndrome after congenital heart disease operation: what can we do

Variables LCOS group(n = 35) No LCOS group(n = 248) t/χ2 P
Male/female 19/16 136/112 1.089 0.071
Age(y) 3.12 ± 2.58 6.91 ± 5.24 1.124 0.002
Preoperative oxygen saturation(%) 91.62 ± 10.31 94.23 ± 10.55 7.033 0.041
Inner diameter of left atrium (mm) 17.93 ± 7.18 17.17 ± 8.41 3.126 0.085
End diastolic diameter of left ventricle (mm) 26.25 ± 8.24 27.57 ± 7.09 7.104 0.098
End systolic diameter of left ventricular (mm) 17.43 ± 7.11 17.52 ± 7.14 4.116 0.102
Left ventricular ejection fraction (%) 67.41 ± 8.33 68.12 ± 7.51 10.274 0.117
Inner diameter of pulmonary artery (mm) 21.28 ± 9.26 20.86 ± 9.33 4.201 0.079
Atrial shunt
 Left to right shunt 13 (37.15%) 93 (37.50%) 1.192 0.085
 No shunt 18 (51.43%) 121 (48.79%) 1.169 0.059
 Right to left shunt 2 (5.71%) 19 (7.66%) 1.202 0.076
 Two-way shunt 2 (5.71%) 15 (6.05%) 1.113 0.069
Ventricular shunt
 Left to right shunt 12 (34.29%) 95 (38.31%) 1.120 0.072
 No shunt 17 (48.57%) 124 (50%) 1.286 0.066
 Right to left shunt 2 (5.71%) 19 (7.66%) 1.113 0.084
 Two-way shunt 4 (11.43%) 10 (4.03%) 1.208 0.038
Preoperative laboratory examination
 White blood cell count (× 109 ·L−1) 9.03 ± 1.61 8.93 ± 1.23 1.128 0.077
 Platelet count (×109 ·L−1) 213.71 ± 84.52 210.24 ± 123.12 1.246 0.104
 Red blood cell count(×109 ·L−1) 4.73 ± 1.17 4.66 ± 1.14 1.093 0.071
 Creatinine (μmol·L−1) 34.13 ± 14.36 33.26 ± 15.23 2.146 0.085
 Alanine aminotransferase (U ·L−1) 18.27 ± 10.12 17.13 ± 12.56 3.108 0.063
 Aspartate aminotransferase(U ·L−1) 19.34 ± 12.32 19.46 ± 15.30 2.997 0.102
 Duration of surgery (min) 125.52 ± 66.49 124.59 ± 75.17 12.084 0.105
 Duration of CPB (min) 67.73 ± 22.97 51.09 ± 23.95 9.169 0.013
 Infusion of red blood cell suspension (mL) 224.36 ± 98.14 228.65 ± 92.17 18.104 0.098
 Postoperative residual shunt 4 (11.43%) 3 (1.21%) 1.297 0.018