Pediatric Cardiology

, Volume 25, Issue 2, pp 131–136 | Cite as

Tei Index Determined by Tissue Doppler Imaging in Patients with Pulmonary Regurgitation After Repair of Tetralogy of Fallot

  • K. Yasuoka
  • K. Harada
  • M. Toyono
  • M. Tamura
  • F. Yamamoto
Original Article


The myocardial performance index (Tei index) determined by the pulsed Doppler method is a simple and noninvasive measurement for assessing global right ventricular (RV) function. This index can also be obtained by tissue Doppler imaging (TDI). The effects of significant pulmonary regurgitation (PR) on the determination of the Tei index by these two methods have not been investigated. We examined 15 patients (6.3 ± 2.2 years) with significant PR after repair of tetralogy of Fallot (TOF) and 24 age-matched healthy children. Myocardial wall motion velocities at the tricuspid annulus were assessed during systole (Sa), early diastole (Ea), and late diastole (Aa) from a four-chamber view. Pulsed Doppler–Tei index and TDI–Tei index were measured as reported previously. The Tei index obtained by the pulsed Doppler method in TOF patients did not differ from that in normal children (0.30 ± 0. 12 vs 0.32 ± 0.07, p = not significant). TDI showed that TOF patients had significantly decreased Ea, Aa, and Sa velocities compared to those of normal children. Both isovolumic contraction time and isovolumic relaxation time in TOF patients were significantly longer than those in normal children (88 ± 18 vs 62 ± 23 msec and 46 ± 11 vs 21 ± 12 msec, respectively; p < 0.0001), although the duration of Sa did not differ between the two groups. Consequently, the Tei index as measured by TDI was significantly greater in TOF patients than in normal children (0.48 ± 0.07 vs 0.30 ± 0.07, p < 0.0001). The Tei index measured by the pulsed Doppler method is limited in its ability to assess RV function in patients with significant PR. However, the Tei index determined by TDI is a sensitive indicator of RV function in these patients, and it appears to be a promising new means of assessing global RV function in patients with significant PR.


Tissue Doppler imaging Tei index Tetralogy of Fallot Pulmonary regurgitation 


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Copyright information

© Springer-Verlag 2003

Authors and Affiliations

  • K. Yasuoka
    • 1
  • K. Harada
    • 1
  • M. Toyono
    • 1
  • M. Tamura
    • 1
  • F. Yamamoto
    • 1
  1. 1.Departments of Pediatrics and Cardiovascular SurgeryAkita University School of Medicine, 1-1-1 Hondo, Akita 010-8543Japan

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