Skip to main content

Table 1 Demographic information, preoperative profile and operative details in the blood-prime group

From: Duration of red blood cell storage and outcomes in pediatric cardiac surgery: an association found for pump prime blood

Variable Patients Receiving Newer Blood
(N = 116)
Patients Receiving Older Blood
(N = 76)
P value
Transfused blood    
Duration of storage (days)    
   Median 3 6 0.001
   Interquartile range 2 to 4 5 to 8  
Number of red blood cell units    
   Median 2 2 0.985
   Interquartile range 2 to 2 2 to 2  
Demographic features    
Age (months)    
   Median 6.5 8 0.089
   Interquartile range 4 to 11 5 to 11  
Male sex -- no. of patients (%) 68 (58) 37 (49) 0.196
Weight (kgs)    
   Median 6.15 6.7 0.244
   Interquartile range 4. 5 to 7.6 5 to 7.7  
Clinical features    
Hematocrit (%)    
   Median 33 36 0.005
   Interquartile range 31 to 36 32 to 38  
Platelet count (cells/μL)    
   Median 321000 314000 0.903
   Interquartile range 249000 to 382000 245000 to 391000  
Prothrombin activity (%)    
   Median 84.5 84.7 0.903
   Interquartile range 76 to 91 76 to 94  
aPTT (seconds)    
   Median 31.2 31 0.724
   Interquartile range 28 to 34 29 to 34  
Antithrombin activity (%)    
   Median 105 104 0.190
   Interquartile range 91 to 115 89 to 113  
Creatinine (mg/dL)    
   Median 0.3 0.3 0.429
   Interquartile range 0.25 to 0.35 0.25 to 0.35  
Bilirubin (mg/dL)    
   Median 0.4 0.35 0.509
   Interquartile range 0.27 to 0.65 0.27 to 0.54  
Aristotle score    
   Median 7.5 6.3 0.803
   Interquartile range 6 to 8 6 to 8  
Redo operations -- no. of patients (%) 6 (5.2) 4 (5.1) 0.296
Operative details    
Procedure -- no. of patients (%)    
   ASD repair 2 (2) 2 (3)  
   VSD repair 39 (34) 27 (36)  
   TOF correction 18 (16) 12 (16)  
   Arterial switch 10 (9) 10 (13)  
   AV canal 16 (14) 10 (13)  
   Others 31 (25) 16 (19)  
Priming volume (mL)    
   Median 400 400 0.292
   Interquartile range 380 to 400 380 to 400  
Transfused RBC volume (mL)    
   Median 240 240 0.792
   Interquartile range 216 to 300 240 to 300  
CPB duration (minutes)    
   Median 82 74 0.480
   Interquartile range 58 to 110 52 to 120  
Lowest temperature (°C)    
   Median 29.6 30 0.771
   Interquartile range 28.3 to 31 28 to 32  
Lowest hematocrit (%)    
   Median 28 28 0.151
   Interquartile range 26 to 29 26 to 30  
  1. aPTT = activated partial thromboplastin time; ASD = atrial septal defect; AV = atrioventricular; CPB = cardiopulmonary bypass; TOF = tetralogy of Fallot; VSD = ventricular septal defect.
  2. Continuous variables are described as medians and interquartile ranges, and P values were calculated by the Wilcoxon rank-sum test; categorical variables are described as numbers and percentages, and P values were calculated by Pearson's chi-square test.