Objective: Currently, most vital signs in the intensive care unit (ICU) are electronically monitored. However, clinical practice for urine output (UO) measurement, an important vital sign, usually requires manual recording of data that is subject to human errors. In this study, we assessed the ability of a novel electronic UO monitoring device to measure real-time hourly UO versus current clinical practice. Design: Patients were connected to the RenalSense Clarity RMS Sensor Kit with a sensor integrated within a standard sterile urinary catheter drainage tube to monitor urine flow in real time. The Clarity RMS Sensor Kit was modified to incorporate a standard urinometer (Unomedical) for the nursing staff to record UO as per their standard practice. The drainage bag was placed in a container on a scientific scale (Precisa BJ) to be used as the gold standard. Interventions: Nursing records for hourly UO were collected and compared with the electronically recorded UO. Sensor measurements and nursing staff manual records of UO were compared with the scale data. Setting: The study setting was the ICU of Hadassah Hospital, Jerusalem. Patients: Data from 23 patients with a urinary cathete
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