Cardiothoracic & vascular anesthesia
Evaluation of Mitral-Aortic Flow Velocity Integral Ratio as a Tool to Differentiate Between Severe and Nonsevere Mitral Regurgitation
Authors' conclusion
MAVIR may be used as an echocardiographic tool to differentiate between severe and nonsevere MR, even in patients with calcific valves.
Study context
- Population
- Adults with chronic mitral regurgitation (MR) (at least mild) scheduled for cardiac surgery, without mitral stenosis, aortic valve disease or non-sinus rhythm; tertiary-care cardiac OR24 with calcific mitral valve
- Participants
- 100 adults
- Comparison
- MAVIR vs regurgitant volume (RVol) and effective regurgitant orifice area (EROA) for differentiating severe from nonsevere MR, by TTE and transesophageal (TEE)
- Outcome
- Agreement (Cohen's kappa) of MAVIR with RVol and EROA in differentiating severe from nonsevere MR, by TTE and TEE
Methodological detailsprospective, cross-sectional, observational, single-centre
- Prospective
- Cross-sectional
- Observational
- Single-centre
Performance
As reported in the abstract
Agreement in differentiating severe from nonsevere MR
- Strong agreement between MAVIR and both RVol and EROA in the whole cohort, by TTE and TEE
Further findings
Agreement in calcific mitral valve (subgroup)
- Strong agreement between MAVIR and both RVol and EROA, by TTE and TEE
- n = 24
Diagnostic indices of MAVIR for severe MR
- Diagnostic indices high for MAVIR compared with RVol and EROA, by TTE and TEE
Original publication
Evaluation of Mitral-Aortic Flow Velocity Integral Ratio as a Tool to Differentiate Between Severe and Nonsevere Mitral Regurgitation. J Cardiothorac Vasc Anesth. Published 9 October 2022. doi:10.
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