Improving Fluid Output Monitoring in the Intensive Care Unit.

Area of Science:

• Critical Care Medicine
• Biomedical Engineering
• Health Informatics

Background:

• Accurate urine output (UOP) monitoring is crucial for critically ill patients.
• Manual UOP documentation in intensive care units (ICUs) is often delayed and labor-intensive.
• Existing monitoring methods may not provide real-time or sufficiently accurate data.

Purpose of the Study:

• To evaluate the clinical impact of an automated urine output (UOP) monitoring system in the ICU.
• To assess the feasibility and accuracy of a novel weight-based UOP monitoring device.

Main Methods:

• Assessed UOP documentation frequency and timeliness over 20 and 3 months, respectively, in ICU records.
• Implemented and tested a novel reusable, weight-based UOP monitoring device in cardiac and cardiothoracic ICUs.
• Compared automated device UOP values against nurse-documented values in a 24-hour period.

Main Results:

• Sixty percent of ICU admissions had UOP recorded less than every 2 hours; one-third of measurements were documented over 2 hours late.
• Automated device UOP measurements showed close agreement with nurse-documented values (within 27 ml).
• The automated system demonstrated feasibility for improving documentation timeliness and reducing nursing workload.

Conclusions:

• Automating urine output monitoring with a reusable weight-based device is feasible in ICUs.
• This technology can enhance the timeliness of UOP documentation.
• The system has the potential to reduce nursing workload without compromising measurement accuracy.