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Table 4 Association of recurrent AKI with outcomes

From: Duration of acute kidney injury in critically ill patients

n = 123 No recurrent AKI p value* Recurrent AKI p value§
Short duration AKI n = 46 Medium duration AKI n = 34 Short and medium duration AKI n = 43
Cardiovascular failure-free days to day 7 (mean ± SD) 5.1 ± 2.3 4.8 ± 2.3 0.47 4.4 ± 2.3 0.06
Ventilator-free days to day 28 (mean ± SD) 20.4 ± 10.0 20.0 ± 9.8 0.89 12.7 ± 10.6 0.003
ICU-free days to day 28 (mean ± SD) 19.7 ± 9.5 19.4 ± 8.7 0.89 11.4 ± 10.7 0.001
Death in health care facility to day 30, n (%) 5 (10.9) 4 (11.8) 1.00 12 (27.9) 0.04
  1. Cardiovascular failure was defined as the need for vasopressor or a systolic blood pressure of 90 mmHg or less. Patients who died before day 28 were assigned zero ventilator days and zero ICU-free days
  2. AKI acute kidney injury, ICU intensive care unit, SD standard deviation, NS nonsignificant
  3. *Short duration AKI without recurrent AKI vs. medium duration AKI without recurrent AKI
  4. §Short and medium duration AKI without recurrent AKI versus short and medium duration AKI with recurrent AKI