Myocardial Performance Index (Tei Index)

Evaluates left and right ventricular function and may be used as part of cardiovascular assessment (1st tab for LV, 2nd tab for RV).

Refer to the text below the calculator for more information about the formulas involved and reference ranges.


The Myocardial Performance Index (MPI), also known as the Tei Index, assesses global myocardial function through systolic and diastolic performance of the right and left ventricle.

It has been used in several studies and has proven diagnostic and prognostic reliability in a wide variety of congenital and acquired cardiovascular abnormalities, correlating with clinical status and being able to predict outcome in patients with idiopathic pulmonary arterial hypertension.


MPI Formula Reference Values
Left Ventricle MPI (MCOT – LVET) / LVET Normal range LV MPI = 0.39 ±0.05
Dilated cardiomyopathy = 0.59 ±0.10
Right Ventricle MPI (TCOT – RVET) / RVET Normal range RV MPI = 0.28 +0.04
Pulsed Doppler RV MPI - Abnormal values >0.40
Tissue Doppler RV MPI - Abnormal values >0.55

Mitral Valve Closure to Opening Time (MCOT)
LV Ejection time (LVET)
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Tricuspid Valve Closure to Opening Time (TCOT)
RV Ejection time (RVET)
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Myocardial Performance Index (Tei Index) Explained

The Myocardial Performance Index (MPI), also known as the Tei Index, assesses global myocardial function through systolic and diastolic performance of the right and left ventricle.

It has been used in several studies and has proven diagnostic and prognostic reliability in a wide variety of congenital and acquired cardiovascular abnormalities, correlating with clinical status and being able to predict outcome in patients with idiopathic pulmonary arterial hypertension.

MPI Formula Reference Values
Left Ventricle MPI (MCOT – LVET) / LVET Normal range LV MPI = 0.39 ±0.05
Dilated cardiomyopathy = 0.59 ±0.10
Right Ventricle MPI (TCOT – RVET) / RVET Normal range RV MPI = 0.28 +0.04
Pulsed Doppler RV MPI - Abnormal values >0.40
Tissue Doppler RV MPI - Abnormal values >0.55

Where:

  • MCOT – Mitral Valve Closure to Opening Time;
  • TCOT – Tricuspid Valve Closure to Opening Time;
  • LVET – Left Ventricle Ejection Time;
  • RVET – Right Ventricle Ejection Time.

Some of the advantages of the Myocardial Performance Index include that it is less dependent on heart rate and blood pressure and that it is not influenced by geometric changes of the ventricle.

The MPI has been found to be a strong predictor of in-hospital heart failure after first acute anterior STEMI.

Please note this index is unsuitable for the evaluation of left ventricular function in a variety of conditions that influence the patterns of left ventricular inflow and outflow, such as:

  • Atrial fibrillation;
  • Atrial flutter;
  • Atrioventricular block;
  • Severe mitral or aortic valvular disease;
  • Severe pericardial effusion.
 

References

Zimbarra Cabrita I, Ruisanchez C, Dawson D, et al. Right ventricular function in patients with pulmonary hypertension; the value of myocardial performance index measured by tissue Doppler imaging. Eur J Echocardiogr. 2010; 11(8):719-724.

Dujardin KS, Tei C, Yeo TC, Hodge DO, Rossi A, Seward JB. Prognostic value of a Doppler index combining systolic and diastolic performance in idiopathic-dilated cardiomyopathy. Am J Cardiol. 1998; 82(9):1071-1076.

Menzel T, Kramm T, Mohr-Kahaly S, Mayer E, Oelert H, Meyer J. Assessment of cardiac performance using Tei indices in patients undergoing pulmonary thromboendarterectomy. Ann Thorac Surg. 2002; 73(3):762-766.

Goroshi M, Chand D. Myocardial Performance Index (Tei Index): A simple tool to identify cardiac dysfunction in patients with diabetes mellitus. Indian Heart J. 2016; 68(1):83-7.

Abuomara HZA, Hassan OM, Rashid T, Baraka M. Myocardial performance index as an echocardiographic predictor of early in-hospital heart failure during first acute anterior ST-elevation myocardial infarction. Egypt Heart J. 2018; 70(2):71-75.


Specialty: Cardiology

System: Cardiovascular

Abbreviation: LV MPI / RV MPI

Article By: Denise Nedea

Published On: July 10, 2020

Last Checked: July 10, 2020

Next Review: July 10, 2025