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Table 3 Association between preoperative parameters and cumulative AKI within 7 days of surgery

From: Predictors and outcome of acute kidney injury after non-cardiac paediatric surgery

Variable AKI No AKI Total χ 2 p value
Age group
 Infants 8 (32.0) 17 (68.0) 25 0.181 0.670
 Older child 25 (36.8) 43 (63.2) 68   
Indication for surgery
 Congenital disease 12 (34.3) 23 (65.7) 35 0.035 0.851
 Acquired disease 21 (36.2) 37 (63.8) 58   
System affected
 Gastrointestinal tract 20 (38.5) 32 (61.5) 52 0.457 0.499
 Other systems 13 (31.7) 28 (68.3) 41   
Preoperative sepsis
 Yes 14 (58.3) 10 (41.7) 24 7.377 *0.007
 No 19 (27.5) 50 (72.5) 69   
Preoperative leucocytosis
 Yes 7 (41.2) 10 (58.8) 17 0.294 0.587
 No 26 (34.2) 50 (65.8) 76   
Preoperative anaemia
 Yes 6 (33.3) 12 (66.7) 18 0.045 0.832
 No 27 (36.0) 48 (64.0) 75   
Preoperative tachycardia
 Yes 15 (33.3) 30 (66.7) 45 0.176 0.675
 No 18 (37.5) 30 (62.5) 48   
Elevated preoperative BP
 Yes 12 (48.0) 13 (52.0) 25 2.340 0.126
 No 21 (30.9) 47 (69.1) 68   
Electrolyte abnormality preoperation#
 Yes 17 (40.5) 25 (59.5) 42 0.834 0.361
 No 16 (31.4) 35 (68.6) 51   
  1. AKI, acute kidney injury; χ2, chi-square
  2. *Statistically significant
  3. #Serum electrolytes assayed were sodium (136–145 mmol/L), potassium (3.5–5.0 mmol/L; 3.5 - 6.0 mmol/L in first 8 weeks of life), chloride (95–105 mmol/L) and bicarbonate (21–30 mmol/L)