Acute kidney injury (AKI) increases the risk of death for people hospitalized for even mild-to-moderate community-acquired pneumonia.

In 1,836 hospitalized pneumonia patients, those with abnormal creatinine levels or urine output on the first day of admission or during their stays were hospitalized longer and had a higher risk of dying at discharge (11% vs. 1.3%), 90 days later (24% vs. 9.8%), and one year later (36.3% vs. 20.1%) than patients without AKI, researchers reported in Kidney International (2010;77:527-535).