Abstract
The objective of this study was to investigate the usefulness of intraprocedural hemodynamic monitoring for MR evaluation during pMRV. Assessment of mitral regurgitation (MR) during percutaneous mitral valve repair (pMVR) procedure is challenging. 3D color Doppler allows exact quantification of MR, but is technically demanding. Sixty patients with moderate to severe MR (14 with structural and 46 functional MR) were included in the study. Intraprocedural pressure curves were continuously obtained in the left atrium (LA) and left ventricle (LV). Transesophageal echocardiography was performed using 3D color Doppler derived mean vena contracta area (VCAmean) and mitral regurgitation volume (RegVol) to quantify MR severity before and after each clip implantation. In the entire patient group, strongest correlations were observed firstly between VCA and the raise of the ascending limb of the left atrial V pressure wave (Vascend; r = 0.58, p < 0.001) and secondly between the difference of peak V wave pressure and mean LA pressure divided by systolic LV pressure [(Vpeak − LAmean) − LVsystole; r = 0.53, p < 0.001]. In patients with structural MR, the highest area under the ROC curve for prediction of mild MR (VCAmean < 0.2 cm² and RegVol < 30 ml) after clip implantation was found for Vascend (AUC 0.89, p < 0.001) whereas in functional MR calculation of (Vpeak − LAmean) − LVsystole showed the highest predictive value (AUC 0.69, p = 0.003). Invasive pressure monitoring can give a direct feedback with regard to the success of clip placement during pMVR.
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Abbreviations
- BMI:
-
Body mass index
- DMR:
-
Degenerative mitral regurgitation
- FMR:
-
Functional mitral regurgitation
- LA:
-
Left atrium
- LAcomp :
-
LA compliance
- LAmean :
-
Mean LA pressure
- LV:
-
Left ventricle
- LVarea :
-
Area under the pressure–time curve derived from the LV
- LVEDP:
-
Left ventricular end diastolic pressure
- LVsystole :
-
Peak systolic left ventricular pressure
- MR:
-
Mitral regurgitation
- RegVol:
-
Regurgitation volume measured by VCA method
- RRdiastolic:
-
Diastolic blood pressure
- RRsystolic:
-
Systolic blood pressure
- VCA:
-
Vena contracta area derived by 3D color Doppler echocardiography
- Vpeak :
-
Peak pressure value of the left atrial V wave
- Varea :
-
Area under the pressure–time curve of the left atrial V wave
- Vascend :
-
Velocity of pressure rise of the left atrial V wave
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Acknowledgements
Björn Goebel and Ali Hamadanchi have received a travel grant by Abbott Vascular to attend EuroEcho-Imaging congress 2015. The authors have full control of all primary data and agree to allow the journal to review the data if requested.
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The authors declare that they have no conflicts of interest.
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All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. For this type of study formal consent is not required.
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Ilonka Rohm and Tudor C. Poerner contributed equally to this work.
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Rohm, I., Poerner, T.C., Hamadanchi, A. et al. Quantification of mitral regurgitation during percutaneous mitral valve repair: added value of simultaneous hemodynamic and 3D echocardiographic assessment. Int J Cardiovasc Imaging 33, 1531–1539 (2017). https://doi.org/10.1007/s10554-017-1153-8
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DOI: https://doi.org/10.1007/s10554-017-1153-8