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Table 3 Relation between weaning success and parameters of admission in ICU including APACHE II score

From: Effect of acute kidney injury on weaning from mechanical ventilation in chronic obstructive pulmonary diseases patients with respiratory failure

Variable Weaning success
Weaned and discharged (no. = 72) Died (mostly hypoxic arrest) (no. = 22) Difficult weaning (no. = 6) Test P
Mean ± SD Range Mean ± SD Range Mean ± SD Range   
APACHE II score 17.36 ± 4.73 11–28 25.36 ± 6.44 15–34 28.33 ± 2.89 25–30 F = 14.97 < 0.001 (HS)
Mechanical ventilation parameter (PEEP) 5 ± 0 5 6.36 ± 2.01 5–10 9.33 ± 2.08 7–11 X2 = 10.53 0.005 (S)
Time of stay in ICU in days 8.97 ± 1.98 7–14 10.73 ± 2.53 7–15 28 ± 2 26–30 X2 = 13.07 0.001 (S)
Time of mechanical ventilation in days 6.03 ± 2.05 4–15 8.73 ± 2.65 6–13 21.67 ± 3.78 19–26 X2 = 18.78 < 0.001 (HS)
  1. ICU intensive care unit, APACHE II acute physiology and chronic health evaluation II, PEEP positive end-expiratory pressure