Cardiothoracic & vascular anesthesia
The impact of intra-abdominal pressure on urine output in postoperative cardiac surgery patients: Insights from continuous monitoring
Authors' conclusion
In this exploratory study, a linear mixed-effects model revealed a significant negative association between increased intra-abdominal pressure and urine output.
Study context
- Population
- Postoperative cardiac surgical patients in the Intensive Care Unit (ICU)3,521 intra-abdominal pressure (IAP) measurements
- Participants
- 36 patients
- Outcome
- Effect of intra-abdominal pressure (IAP) on urine output (UO)
Methodological detailsexploratory, continuous monitoring
- Exploratory
- Continuous monitoring
Main finding
As reported in the abstract
Correlation between IAP and urine output (UO) (Spearman)
−0.30
p < 0.001
Correlation between changes in IAP and changes in UO, not statistically significant
0.02
p = 0.19
IAP independently and negatively associated with log-transformed hourly UO (multivariate linear mixed-effects model), β
−0.075 (−0.098 - (−0.052)), p < 0.001 (95% CI)
Estimated decrease in UO per 1 mmHg increase in IAP
7 %
Observational data: associations, not effects.
Original publication
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