Formula to Correct Left Ventricular Ejection Fraction in Patients with Mitral Valve Regurgitation

Le résumé fourni par la source

Left ventricular ejection fraction is a key measurement for the assessment of systolic function. In case of mitral valve insufficiency,part of the ejected volume regurgitates to the left atrium, the anterograde volume is less than expected, and theejection fraction maintains a value that does not adequately represent the inotropic state. This does not allow certain patientswith heart failure to be correctly classified and treated, especially regarding the indication of devices (resynchronizationtherapy and defibrillator implant). Based on the calculation of the regurgitant fraction, we propose a simple formula to makea “correction” of the ejection fraction in this type of cases. The corrected ejection fraction was tested in a group of consecutiveoutpatients. The study confirmed that 54% of patients have their prognosis and/or treatment modified when applyingthe proposed formula.

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.