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Determination of Diastolic Dysfunction Cut-Off Value by Tissue Doppler Imaging in Adults 70 Years of Age or Older: A Comparative Analysis of Pulsed-Wave and Color-Coded Tissue Doppler Imaging

  • Baek, Hee-Kyung (Department of Cardiology, Dong-A University College of Medicine) ;
  • Park, Tae-Ho (Department of Cardiology, Dong-A University College of Medicine) ;
  • Park, Sun-Yi (Department of Cardiology, Dong-A University College of Medicine) ;
  • Kim, Jung-Hwan (Department of Cardiology, Dong-A University College of Medicine) ;
  • Seo, Jeong-Min (Department of Cardiology, Dong-A University College of Medicine) ;
  • Kim, Woo-Jae (Department of Cardiology, Dong-A University College of Medicine) ;
  • Nam, Young-Hee (Department of Cardiology, Dong-A University College of Medicine) ;
  • Kim, Moo-Hyun (Department of Cardiology, Dong-A University College of Medicine) ;
  • Kim, Young-Dae (Department of Cardiology, Dong-A University College of Medicine)
  • Published : 2011.03.30

Abstract

Background and Objectives: The cut-off value of diastolic dysfunction by tissue Doppler imaging (TDI) is affected by aging and modalities used (pulsed-wave vs. color-coded). The purpose of this study was to investigate the diastolic function of healthy elderly people and to determine the appropriate cut-off value of diastolic dysfunction in elderly individuals. Subjects and Methods: Healthy volunteers (n=76) and patients with hypertension (n=51) aged ${\geq}$70 years underwent 2-dimensional and Doppler echocardiography. Mitral annulus velocities of TDI were measured at septal and lateral sites using the pulsed-wave and color-coded modalities. The appropriate cut-off value of diastolic dysfunction for healthy elderly individuals was defined as the lower limit of the 95% confidence interval for early diastolic mitral annulus velocity (Ea). Results: The mean septal and lateral Ea were 6.5${\pm}$1.5 and 8.3${\pm}$1.7 cm/s, respectively, by pulsed-wave TDI, and 6.1${\pm}$1.4 and 7.9${\pm}$1.7 cm/s, respectively, by color-coded TDI. The cut-off values for diastolic dysfunction were as follows: septal and lateral Ea were 6.1 and 7.9 cm/s by pulsed-wave TDI, and 5.7 and 7.5 cm/s by color-coded TDI, respectively. When the group was stratified by gender, Ea was significantly lower in women than men. Conclusion: When interpreting diastolic function as measured by TDI in elderly subjects, different cut-off values should be considered based on the TDI modality, annulus site, and gender.

Keywords

References

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