Diagnostic value of Tei index in detection of chronic heart failure in elderly patients
Bart, B.Ia.; Larina, V.N.; Alekhin, M.N.; Dergunova, E.N.
Terapevticheskii Arkhiv 80(4): 15-21
2008
ISSN/ISBN: 0040-3660 PMID: 18491574 Document Number: 618082
Aim. To evaluate diagnostic value of Tei index in detection of chronic heart failure (CHF) in elderly outpatients.Material and methods. Examination of 101 CHD patients of the study group and 46 control patients free of heart disease aged over 60 years included registration of doppler spectra and calculation of the Tei index which is a ratio of isovolumic contraction time plus isovolumic relaxation time to left ventricular (LV) ejection time and can be calculated using dopplerography.Results. Mean Tei index in CHF patients was significantly higher than in control patients. The Tei index significantly exceeded that in the controls in CHD patients with both low and normal L V ejection fraction. In healthy controls over 60 years of age Tei index varied from 0.40 to 0.59 and averaged 0.5 +/- 0.05. Optimal diagnostic ability to detect CHF in the elderly is shown for Tei index 0.56. For this value sensitivity of the index reached 90%, specificity - 87%.Conclusion. Calculation of the Tei index is possible in all the patients irrespective of quality of heart and L V endocardium visualization in echocardiogrophy.