Fetal cardiac function assessed by Doppler myocardial performance index (Tei Index)

D. Friedman, J. Buyon, M. Kim, J. S. Glickstein

Research output: Contribution to journalArticlepeer-review

167 Scopus citations


Objectives: The Tei Index (TI) is a useful, non-invasive, Doppler-derived myocardial performance tool which can be used to assess aspects of systolic and diastolic function. The aim of this study was to determine normal values of fetal left ventricular (LV) TI in second- and third-trimester fetuses and to compare these to other values reported in the literature. Methods: Doppler waveforms of the LV outflow tracts were obtained in 74 second- and early third-trimester fetuses. The LV isovolumic contraction time (ICT), isovolumic relaxation time (IRT) and ejection time (ET) were measured and the TI calculated using the formula (ICT + IRT)/ET. The literature on LV myocardial function in the fetus was also reviewed. Results: The normal TI in second- and early third-trimester fetuses (18-31 weeks' gestation) was 0.53 ± 0.13. The ICT was 43 ± 14 ms, the ET was 173 ± 16 ms and the IRT was 48 ± 13 ms. Conclusion: The TI can be easily obtained in the fetus without the need for precise anatomic imaging. The TI may be a useful tool to explore fetal myocardial function in different clinical situations.

Original languageEnglish (US)
Pages (from-to)33-36
Number of pages4
JournalUltrasound in Obstetrics and Gynecology
Issue number1
StatePublished - Jan 1 2003
Externally publishedYes


  • Fetal echocardiography
  • Fetal myocardial function
  • Tei Index

ASJC Scopus subject areas

  • Radiological and Ultrasound Technology
  • Reproductive Medicine
  • Radiology Nuclear Medicine and imaging
  • Obstetrics and Gynecology


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