Anaesthetic drugs & techniques
Preoperative Ultrasonographic Assessment of Caval-Aortic Index and Inferior Vena Cava Collapsibility Index for Predicting Postinduction Hypotension During General Anesthesia: A Prospective Observational Study
Authors' conclusion
Preoperative ultrasonographic assessment of the IVC:Ao index provides superior predictive performance and a substantially narrower gray zone compared with the IVC-CI for identifying patients at risk of postinduction hypotension.
Study context
- Population
- Adults scheduled for elective surgery under GA, tertiary care university hospital
- Participants
- 100 adults
- Comparison
- IVC:Ao index vs inferior vena cava collapsibility index (IVC-CI) for predicting postinduction hypotension
- Outcome
- Prediction of postinduction hypotension
Methodological detailsprospective observational
- Prospective observational
Performance
As reported in the abstract
| Test or model | AUC | Sensitivity (cutoff ≤1.1) | Specificity (cutoff ≤1.1) | Gray zone |
|---|---|---|---|---|
| IVC:Ao index | 0.971 (95% CI 0.916-0.994) | 94.1% | 93.8% | 10% of patients |
| IVC-CI | 0.846 (95% CI 0.760-0.910) | 53% |
AUC
IVC:Ao index0.971 (95% CI 0.916-0.994)
IVC-CI0.846 (95% CI 0.760-0.910)
Sensitivity (cutoff ≤1.1)
IVC:Ao index94.1%
IVC-CI— not stated in the abstract
Specificity (cutoff ≤1.1)
IVC:Ao index93.8%
IVC-CI— not stated in the abstract
Gray zone
IVC:Ao index10% of patients
IVC-CI53%
- IVC:Ao index vs IVC-CI: P = 0.025 — IVC:Ao index significantly outperformed IVC-CI
Further findings
| Outcome | OR (95% CI) | P value | |
|---|---|---|---|
| Association with hypotension (multivariable)IVC:Ao index, per 0.1-unit decrease | 4.95 (2.43–10.09) | P < 0.001 | |
| Association with hypotension (multivariable)IVC-CI, per 10-point increase · independently associated | 6.17 (2.66–14.31) | P < 0.001 | |
| 0.050.21520Odds ratio (log scale) |
Incidence of postinduction hypotension
- Postinduction hypotension occurred
- 68 (68%)
Parts of this Brief are withheld: the automatic checks could not confirm them against the abstract.
Original publication
Preoperative Ultrasonographic Assessment of Caval-Aortic Index and Inferior Vena Cava Collapsibility Index for Predicting Postinduction Hypotension During General Anesthesia: A Prospective Observational Study. J Cardiothorac Vasc Anesth. Published 22 June 2026. doi:10.
Composed by AI from the published abstract and checked against it. How Briefs are made →