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Table 1 Study population and baseline characteristics

From: Effect of low-dose exogenous surfactant on infants with acute respiratory distress syndrome after cardiac surgery: a retrospective analysis

Characteristic Surfactant
n = 22
Control
n = 22
P Value
Age (months) 5.5(±1.6) 5.3(±1.8) 0.698
Weight (kg) 6.2(±1.2) 6.3(±1.5) 0.808
Sex (male/female) 13/9 12/10 0.585
RACHS-1 II (%) 7(31.8) 7(31.8)  
RACHS-1 III (%) 8(36.3) 8(36.3)  
RACHS-1 IV (%) 7(31.8) 7(31.8)  
Total on-pump time (min) 146.8(±44.5) 138.4(±35.8) 0.382
Aortic clamping time (min) 57.3(±18.1) 52.3(±15.2) 0.326
Time of inclusion (days after operation) 3.0(±1.6) 2.9(±1.4) 0.826
OI 13.9(±3.8) 13.2(±3.2) 0.512
VI 42.4(±7.6) 40.6(±8.4) 0.460
PaO2/FiO2 88.5(±15.4) 90.3(±17.5) 0.719
PaCO2 43.0(±5.8) 45.8(±7.5) 0.173
SOFA score 10.5(±2.9) 11.2(±3.1) 0.325
Use of neuromuscular blockers (%) 12(54.5) 14(63.6) 0.106
Vasopressor use (%) 22(100) 22(100)  
Body temperature (°C) 36.5(±0.4) 36.4(±0.5) 0.468
Mean arterial pressure (mmHg) 44.6(±18.4) 47.2(±15.6) 0.616
White cell count (109/L) 13.4(±4.2) 12.1(±3.8) 0.288
CRP (mg/L) 58.6(±20.7) 49.2(±16.1) 0.100
Latate (mmol/L) 1.1(±0.4) 0.8(±0.3) 0.013
Creatinine (umol/L) 64.8(±32.2) 72.1(±20.5) 0.375
Clinical pneumonia+ CPB injury (%) 10(45.5) 12(54.5) 0.818
 Proved pneumonia (%) 7(31.8) 9(40.9) 0.358
  Viral, non-RSV (%) 2(9) 3(13.6) 0.000
  RSV (%) 1(4.5) 2(9) 0.000
  Bacterial (%) 3(13.6) 4(18) 0.003
CPB injury (%) 12(54.5) 10(45.5) 0.818
  1. Surfactant: patients who had ARDS after cardiac surgery received standard treatment plus exogenous surfactant. Control: patients who had ARDS after cardiac surgery received standard treatment only. The data are presented as mean ± standard; qualitative data are presented as numbers (%)
  2. RACHS-1 risk adjustment congenital heart surgery-1, CPB cardiopulmonary bypass, VI ventilation index, OI oxygenation index