Cardiothoracic & vascular anaesthesia
Phase-dependent agreement between noninvasive and invasive blood pressure monitoring during transcatheter aortic valve replacement: a prospective observational study
Authors' conclusion
ClearSight showed phase-dependent agreement with IAP during TAVR, typically underestimating systolic and mean pressures, with improved agreement during hemodynamic stability, most notably after protamine.
Study context
- Population
- Patients undergoing transcatheter aortic valve replacement (TAVR) at a tertiary academic hospital987 paired measurements
- Participants
- 21 patients
- Exposure
- ClearSight noninvasive BP vs invasive arterial pressure
- Outcome
- Phase-dependent agreement between ClearSight and IAP across intraoperative phases of TAVR
Methodological detailssingle-centre, method-comparison (Bland-Altman with linear mixed-effects modeling)
- Single-centre
- Method-comparison (Bland-Altman with linear mixed-effects modeling)
Main finding
As reported in the abstract
Mean bias (IAP minus ClearSight), after outlier exclusion
Mean bias, systolic
+14 mm Hg
Mean bias, mean
+6 mm Hg
Mean bias, diastolic
−3 mm Hg
Observational data: associations, not effects.
Further findings
Intraclass correlation coefficients, before to after outlier removal
- Systolic
- 0.69 to 0.72
- Mean
- 0.65 to 0.68
- Diastolic
- 0.59 to 0.63
- Limits of agreement narrowed after outlier removal
Original publication
Phase-dependent agreement between noninvasive and invasive blood pressure monitoring during transcatheter aortic valve replacement: a prospective observational study. Can J Anaesth. Published 2 September 2026. doi:10.
Composed by AI from the published abstract and checked against it. How Briefs are made →