Intensive Monitoring of Urine Output is Associated with Increased Detection of Acute Kidney Injury and Improved Outcomes

Background

Urine output (UO) is a vital sign for critical ill patients but standards for monitoring and reporting vary widely between ICUs. Careful monitoring of UO could lead to earlier recognition of acute kidney injury (AKI) and better fluid management. We sought to determine if intensity of UO monitoring is associated with outcomes in patients with and without AKI.

Methods

Retrospective cohort study including 15,724 adults admitted to ICUs from 2000-2008. Intensive UO monitoring was defined as hourly recordings and no gaps >3 hours for the first 48 hours after ICU admission.

Results

4,049 (26%) patients underwent intensive monitoring for UO and we found significantly higher rates of AKI (OR 1.22 pConclusion

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