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Table 1 Patient characteristics

From: Prevalence of and risk factors for perioperative arrhythmias in neonates and children after cardiopulmonary bypass: continuous holter monitoring before and for three days after surgery

  all (n = 494) neonates (n = 96) infants and children (n = 398) P
Age in months 12.2 (0.0-218.4) 0.2 (0.0-0.9) 24.4 (1.1 months to 18 years) < 0.0001
cardiopulmonary bypass in min 65 (24-264) 50 (33-165) 71 (24-264) < 0.0001
cardiocirculatory arrest used in 352 (71.3%) 96 (100%) 256 (64.3%)  
duration if cardiocirculatory arrest was used in min 59 (14-158) 59 (21-127) 58 (14-158) 0.01
aortic clamping time in min 61 (2-177) 62 (23-125) 61 (2-177) 0.05
Male 291 (58.9%) 67 (70.0%) 224 (56.3%) 0.04
repair of atrial septal defect 213 (43.1%) 87 (90.6%) 126 (31.7%) < 0.0001
repair of isolated atrial septal defect of secundum type 56 (11.3%) 2 (2.1%) 54 (13.6%) 0.07
repair of incomplete atrioventricular septal defect 31 (6.3%) 1 (1.0%) 30 (7.5%) 0.3
Repair of complete atrioventricular septal defect 26 (5.3%) 0 26 (6.5%)  
repair of ventricular septal defect (all types) 189 (38.3) 21 (21.9%) 168 (42.2%) 0.002
repair of isolated subarterial ventricular septal defect 51 (10.3%) 0 51 (12.8%)  
repair of tetralogy of Fallot 69 (13.0%) 1 (1.0%) 68 (17.1%) 0.01
right ventricular outflow tract surgery 107 (21.7%) 1 (1.0%) 106 (26.6%) < 0.0001
repair of subaortic stenosis 13 (2.6%) 0 13 (3.3%)  
repair of total anomalous pulmonary venous return 13 (2.6%) 2 (2.1%) 11 (2.8%) 0.9
Fontan operation and its modifications * 25 (5.1%) 0 25 (6.3%)  
arterial switch operation 89 (18.0%) 85 (88.5%) 4 (1.0) < 0.0001
miscellaneous operations 102 (20.6%) 7 (7.3%) 95 (23.9%) 0.009
  1. Patients who underwent closure of a secundum type atrial septal defect are also included in those with atrial septal defect repair. Patients with repair of atrioventricular septal defect include those with the complete and the incomplete type of the defect. The subgroup of subarterial ventricular septal defects is also analysed in the group of ventricular septal defects. Patients with repair of tetralogy of Fallot are also included in the cohort of patients who underwent right ventricular outflow tract surgery.
  2. *including 2 patients with a classic Fontan repair and 29 with total cavopulmonary connections