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Table 1 Baseline characteristics of the repeat and primary sternotomy groups

From: Effect analysis of repeat sternotomy in pediatric cardiac operations

Variable RS (n = 195) PS (n = 250) P-value
Demographic
 Age (year) 5.2 (0.6–16.8) 1.1 (0.1–15.0) 0.000
 Gender (female) 75 (38.5 %) 99 (39.6 %) 0.807
 Weight (kg) 16.0 (5.0–55.0) 10.0 (3.3–47.0) 0.000
 Interval since last sternotomy (month) 35 (2–144) - -
Operative
 Major injury 7 (3.6 %) 0 0.003
 Incision-to-CPB time (min) 96 (35–271) 18 (15–37) 0.000
 CPB time (min) 126 (0–442) 67 (0–206) 0.000
 Cross-clamp time (min) 64 (0–222) 36 (0–153) 0.000
 RBC requirement (units/kg) 0.06 (0–5.2) 0 (0–0.45) 0.000
 Plasma requirement (mL/kg) 16.7 (0–260) 0 (0–64.5) 0.000
 Chest tube drainage initial 24 h (mL/kg) 11.1 (2.7-76.4) 5.41 (2.5-18.5) 0.000
 Ventilation time (h) 21 (1–1433) 9 (0–434) 0.000
 ICU length of stay (d) 3 (0–65) 1 (0–35) 0.000
Outcomes
 Renal failure 6 (3.1 %) 7 (2.8 %) 0.863
 Low output syndrome 5 (2.6 %) 6 (2.4 %) 1.000
 Sepsis 5 (2.6 %) 3 (1.2 %) 0.306
 Sternal infection/dehiscence 3 (1.5 %) 1 (0.4 %) 0.324
 Bleeding 2 (1.0 %) 1 (0.4 %) 0.584
 Total morbidity 21 (10.8 %) 18 (7.2 %) 0.125
 Mortality 2 (1.0 %) 2 (0.8 %) 1.000