Cardiothoracic & vascular anesthesia
Automated Inferior Vena Cava Distensibility Index for Assessing Fluid Responsiveness in Ventilated Patients After Cardiac Surgery: A Prospective Pilot Comparative Study
Authors' conclusion
Among cardiac surgical patients, manual IVC-DI correlated significantly with SVV in assessing FR. However, the automated IVC-DI mode demonstrated less reliability.
Study context
- Population
- Ventilated patients after cardiac surgery, single tertiary academic centre
- Participants
- 50 consecutive patients
- Comparison
- Automated inferior vena cava distensibility index (IVC-DI) vs stroke volume variation (SVV) and manual IVC-DI for assessing fluid responsiveness
- Outcome
- Correlations of SVV with automated and manual IVC-DI before and after fluid challenge, and accuracy of fluid responsiveness (FR) (cardiac output increase >10% after fluid challenge) by automated and manual IVC-DI
Methodological detailsprospective, descriptive, single-centre, pilot, Second comparison performed 90 to 180 minutes later
- Prospective
- Descriptive
- Single-centre
- Pilot
- Second comparison performed 90 to 180 minutes later
Performance
As reported in the abstract
Agreement and correlation of IVC-DI methods; FR prediction
R
−0.141
P = 0.328
Automated IVC-DI vs Manual IVC-DI · before fluid challenge; concordance rate 98%
R
0.172
P = 0.233
Automated IVC-DI vs Manual IVC-DI · after fluid challenge; concordance rate 98%
R
0.352
P = 0.012
Manual IVC-DI vs SVV · after fluid challenge
Automated IVC-DI
- Sensitivity
- 64%
- Specificity
- 49%
- AUC
- 0.55
Automated IVC-DI
Sensitivity64%
Specificity49%
AUC0.55
Original publication
Automated Inferior Vena Cava Distensibility Index for Assessing Fluid Responsiveness in Ventilated Patients After Cardiac Surgery: A Prospective Pilot Comparative Study. J Cardiothorac Vasc Anesth. Published 20 August 2025. doi:10.
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