Early detection of oliguric events in critically ill patients in the ICU with a novel continuous urine flow measurement device: results of an initial validation study
Performance · Agreement of urine flow, Serenno vs Camera (Bland-Altman)Result — go to the resultbias −0.4 ml/h 95% CI - 28 to 27Authors' conclusion
The Serenno Medical Automatic urine output measuring device required minimal supervision, little ICU nursing staff attention, and is sufficiently accurate and precise. In addition to providing continuous assessments of urine output, it was considerably more accurate than hourly nursing assessments.
Study context
- Population
- Critically ill ICU patientscompleted the study
- Participants
- 37 patients
- Comparison
- Serenno automatic urine output device vs camera-read standard urometer
- Outcome
- Difference between urine flow by the Serenno device and camera-derived measurements
- Follow-up
- 1 to 7 days
Methodological detailsmulticentre (three ICUs)
- Multicentre (three ICUs)
Performance
As reported in the abstract
Agreement of urine flow, Serenno vs Camera (Bland-Altman)
bias
−0.4 ml/h
95% CI - 28 to 27
- Concordance
- 92%
Secondary outcomes
| Outcome | Bias (ml) |
|---|---|
| Agreement of urine output, Camera vs NurseLimits of agreement - 75 to + 107 ml; distinctly worse | 7.2 |
Severe oliguria (urine output < 0.3 ml/kg/h) lasting ≥2 h
- Patients with severe oliguria
- 8 (21%)
Severe oliguric events lasting >3 consecutive hours not detected or documented by nursing staff
- Undetected events
- 6 (41%)
Safety
- Device-related complications
- 0
Original publication
Early detection of oliguric events in critically ill patients in the ICU with a novel continuous urine flow measurement device: results of an initial validation study. J Clin Monit Comput. Published 7 April 2023. doi:10.
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