MITRAL ANNULAR PLANE SYSTOLIC EXCURSION-DERIVED FORMULA TO CALCULATE THE EJECTION FRACTION: A SIMPLE, EASY AND RAPID ECHOCARDIOGRAPHY PARAMETER TO ASSES LEFT VENTRICLE SYSTOLIC DYSFUNCTION

Abstract

Aims & Objectives - MAPSE DERIVED EJECTION FRACTION CAN BE USED AS AN ALTERNATIVE TO THE CONVENTIONAL ECHOCARDIORAPHIC MEASUREMENTS OF EJECION FRACTION IN EVERY DAY CLINICAL PRACTICE WITH PATIENTS WITH LV SYSTOLIC DYSFUNTION & VALIDATION OF MITRAL ANNULAR PLANE SYSTOLIC EXCURSION DERIVED FORMULA TO CALCULATE THE EJECTION FRACTION IN PATIENTS WITH LV SYSTOLIC DYSFUNCTION EF=4.8XMAPSE(mm)+5.8 in adult male & 4.2X MAPSE(mm)+20 in adult female. Our study is Material and Methodobservational, prospective study with cross sectional data collection done in a period of nov 2018 to nov 2019, The study included 151 adult male and female patients with LV systolic dysfunction fullling all inclusion criteria, LVEF measured by average MAPSE and LVEF measured by visual inspection, M–mode, and modied Simpson's rule was statistically correlated to know the validity of MAPSE derived ejection in case of LVsystolic dysfunction. The current study showed a signicant positive correlation Result - between average MAPSE and EF measured by Mmode (r =0.980, P < 0.001), EF measured by Simpson's rule (r =0.968, P < 0.001), and EF measured by visual inspection(r =0.960, P < 0.001). The mean differences in the EF derived by MAPSE formula between the inter-observer was(-0.14 ± 3.18 ). MAPSE-derived EF using Conclusion - the equation EF = 4.8 × MAPSE (mm) + 5.8 for male and EF = 4.2×MAPSE (mm)+20 for female, is a valid echocardiographic parameter in adult males and females with impaired LV systolic function to asses global LV longitudinal function with minimal interobserver variability.