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Table 2 Summary description of clinical features of patients by etiology of sARF

From: Prognosis for long-term survival and renal recovery in critically ill patients with severe acute renal failure: a population-based study

Clinical feature Total (n = 240) Prerenal (n = 36) Renal (n = 203) p value
Median age (IQR; years) 66 (53–74) 60 (48–71) 67 (54–75) 0.08
Male sex (%) 139 (58) 17 (47) 122 (60) NS
Mean Charlson co-morbidity index (±SD) 6.2 (3.6) 6.7 (3.9) 6.1 (3.6) NS
Mean APACHE II score (±SD) 33 (8.6) 33 (7.0) 33 (8.9) NS
Oliguria (%) 183 (77) 33 (92) 150 (74) 0.02
Hypotension (%) 204 (85) 27 (75) 177 (87) 0.07
Vasopressors (%) 185 (77) 25 (69) 160 (79) NS
Shock (%) 178 (74) 23 (64) 155 (76) NS
Sepsis syndrome (%) 167 (70) 23 (64) 144 (71) NS
Bloodstream infection (%) 50 (21) 5 (14) 45 (22) NS
Mean arterial pH (±SD)a 7.26 (0.14) 7.18 (0.15) 7.27 (0.13) <0.001
Mean serum potassium (±SD) (mmol/l)a 4.8 (1.1) 4.9 (1.3) 4.7 (1.1) NS
Median serum creatinine (IQR; μmol/l)a 405 (265–515) 357 (247–514) 413 (269–517) NS
Median serum urea (IQR; mmol/l)a 24 (16–33) 24 (16–33) 25 (16–33) NS
Mechanical ventilation (%) 174 (73) 19 (53) 155 (76) <0.01
Acute respiratory distress syndrome (%) 91 (41) 14 (39) 85 (42) NS
Cardiac arrest (%) 43 (18) 6 (17) 37 (18) NS
  1. aLaboratory values determined prior to initiation of RRT. APACHE, Acute Physiology and Chronic Health Evaluation; IQR, interquartile range; sARF, severe acute renal failure; SD, standard deviation; NS, non-significant.