Critically ill patients with subarachnoid hemorrhage show a strong association between hyperchloremia and acute kidney injury as well as acute kidney injury and mortality. Of 1,267 patients included in this cohort, 16.7% developed acute kidney injury, as defined by Kidney Disease Improving Global Outcome criteria (changes in creatinine only).

Compared to patients without acute kidney injury, patients with acute kidney injury had a higher prevalence of diabetes mellitus (21.2% vs 9.8%; p < 0.001) and hypertension (70.3% vs 50.5%; p < 0.001) and presented with higher admission creatinine concentrations (1.21 ± 0.09 vs 0.81 ± 0.01 mg/dL [mean ± SD], respectively; p < 0.001).

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