Cardiothoracic & vascular anesthesia
Agreement Between Ventricular-Arterial Coupling Measured by Carotid Ultrasound and Transesophageal Echocardiography in Cardiac Surgery Patients:A Proof-of-Concept Study
Authors' conclusion
Carotid ultrasound-derived VAC demonstrated good correlation with VAC measured using TEE in this pilot study.
Study context
- Population
- Adults undergoing elective CABG surgery
- Participants
- 12 adults
- Exposure
- Carotid ultrasound vs transesophageal echocardiography (TEE) for measuring ventricular-arterial coupling (VAC)
- Outcome
- Agreement between carotid ultrasound and TEE in measuring VAC (Ea/Ees ratio; correlation and Bland-Altman analyses)
- Follow-up
- Preoperatively and postoperatively
Methodological detailsproof-of-concept, method-comparison (agreement), Setting: operating room
- Proof-of-concept
- Method-comparison (agreement)
- Setting: operating room
Main finding
As reported in the abstract
- Carotid ultrasound
- r (elastance (Ea)) 0.87 (95% CI 0.73–0.95)
- Carotid ultrasound
- r (Ees) 0.82 (95% CI 0.63–0.92)
- Carotid ultrasound
- r (VAC) 0.79 (95% CI 0.56–0.90)
- Limits of agreement ±0.30 (range, −0.18 to 0.39)
- bias (VAC) −0.01 (95% CI −0.07 to 0.05)
Observational data: associations, not effects.
Original publication
Agreement Between Ventricular-Arterial Coupling Measured by Carotid Ultrasound and Transesophageal Echocardiography in Cardiac Surgery Patients:A Proof-of-Concept Study. J Cardiothorac Vasc Anesth. Published 26 December 2025. doi:10.
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