RV Myocardial Performance Index

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Data Acquisition

RV myocardial performance index

Reference Values

RV MPI
by Pulsed Doppler by Tissue Doppler
Normal ≤0.40 ≤0.55
Abnormal >0.40 >0.55

Formula

\[RV \hspace{0.2cm}MPI = \frac{IVCT + IVRT}{RVET} = \frac{TCOT-RVET}{RVET} \]

Definitions

TCOT Tricuspid valve closure to opening time
RVET RV ejection time
RV MPI RV myocardial performance index

References

1. Rudski LG, et al. Guidelines for the echocardiographic assessment of the right heart in adults: a report from the American Society of Echocardiography. J Am Soc Echocardiogr. 2010 Jul;23(7):700-1. Full text
2. 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