# LV Myocardial Performance Index

#### Reference Values

 LV MPI Normal 0.39 ± 0.05 Dilated cardiomyopathy 0.59 ± 0.10

#### Formula

$LV \hspace{0.2cm}MPI = \frac{IVCT + IVRT}{LVET} = \frac{MCOT-LVET}{LVET}$

#### Definitions

 LV MPI LV myocardial performance index MCOT Mitral Valve Closure to Opening Time LVET LV ejection time

#### Reference

 1 Tei C, Ling LH, Hodge DO, et al. New index of combined systolic and diastolic myocardial performance: a simple and reproducible measure of cardiac function – a study in normals and dilated cardiomyopathy. J Cardiol 1995;26:357-366. Abstract

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Developer & Illustrator: Sirikarn Napan, MD, FACC