Haemodynamics, fluids & transfusion
Development and internal validation of the Low Cardiac Index Score: a simplified bedside tool for continuous intraoperative screening
Authors' conclusion
The LCI score is a simple bedside rule-out tool for low cardiac index, with a score below 30 yielding a negative predictive value of 0.97.
Study context
- Population
- Adults undergoing major abdominal surgery with advanced haemodynamic monitoring (January 2023 to February 2026)42,346 timepoints
- Participants
- 136 adults
- Comparison
- Low Cardiac Index (LCI) score vs Individual haemodynamic parameters
- Outcome
- Low cardiac index (pulse contour cardiac index < 2.2 l.min- 1.m- 2), test-set performance
Methodological detailssingle-centre, 80/20 patient-level split, patient-level cluster bootstrap
- Single-centre
- 80/20 patient-level split
- Patient-level cluster bootstrap
Performance
As reported in the abstract
Detection of low cardiac index (LCI score, threshold ≥ 30), test set
AUC
0.84
95% CI 0.75, 0.91
Sensitivity
0.92
0.80, 0.99
NPV
0.97
0.92, 1.00
Further findings
Stability across random splits
- Performance stable across 20 random splits
Original publication
Development and internal validation of the Low Cardiac Index Score: a simplified bedside tool for continuous intraoperative screening. J Clin Monit Comput. Published 17 August 2026. doi:10.
Composed by AI from the published abstract and checked against it. How Briefs are made →