Myocardial Performance Index (CO and ET)


The Myocardial Performance Index (aka Tei-Doppler Index) is an index of combined systolic and diastolic function that is a sensitive indicator of symptomatic heart failure. Likewise it provides important prognostic information in patients with dilated cardiomyopathy, amyloidosis, coronary heart disease and symptomatic heart failure as well as in elderly men and the general population.

For the LV the measurements are derived from the mitral valve and LVOT flow - Interpretation:

  • Normal 0.39 ± 0.05; Dilated cardiomyopathy 0.59 ± 0.10

For the RV the measurements are derived from the tricuspid valve and RVOT flow - Interpretation:

  • Normal 0.28 ± 0.04; Pulmonary Hypertension 0.93 ± 0.34


Tei C, Nishimura RA, Seward JB, et al.

Journal of the American Society of Echocardiography 1997, 10 (2): 169-78

Bruch C, Schmermund A, Marin D, et al.

European Heart Journal 2000, 21 (22): 1888-95

Oh J, Seward JB, Tajik AJ.

The Echo Manual 3rd edition. Lippincott, Williams, Wilkins. 2007

The Myocardial Performance Index (CO and ET) calculator is created by QxMD.

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1. Valvular Closure to Opening Time?

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