BACKGROUND: A peak negative myocardial velocity gradient (MVG) across the left ventricular wall is an important indicator of diastolic performance. The reproducibility of MVG measurements by color M-Mode tissue Doppler imaging (TDI) is still unsatisfactory, restraining its use in clinical practice. Aim of the study was to improve the reproducibility of measurements of MVG. METHODS: The peak diastolic MVG of left ventricular posterior wall was determined in 50 consecutive patients by two investigators in two ways: (1) using directly standard anatomic color M-Mode TDI and (2) by the same technique, but guided by a preliminary MVG estimation with pulsed TDI using four measurement sets within the ventricular wall. RESULTS: The interobserver agreement limits of the combined method [-0.78 s(-1) (95% CI: -0.95 to -0.6 s(-1)) to 0.57 s(-1) (95% CI: 0.4-0.75 s(-1))] were clearly superior to those shown by color M-Mode TDI without B-Mode pre-assessment [-1.35 s(-1) (95% CI: -1.72 to -0.98 s(-1)) to 1.5 s(-1) (95% CI: 1.13-1.87 s(-1))]. CONCLUSIONS: An initial estimation by pulsed TDI is useful to achieve a clinically acceptable reproducibility of MVG measurements.
BACKGROUND: A peak negative myocardial velocity gradient (MVG) across the left ventricular wall is an important indicator of diastolic performance. The reproducibility of MVG measurements by color M-Mode tissue Doppler imaging (TDI) is still unsatisfactory, restraining its use in clinical practice. Aim of the study was to improve the reproducibility of measurements of MVG. METHODS: The peak diastolic MVG of left ventricular posterior wall was determined in 50 consecutive patients by two investigators in two ways: (1) using directly standard anatomic color M-Mode TDI and (2) by the same technique, but guided by a preliminary MVG estimation with pulsed TDI using four measurement sets within the ventricular wall. RESULTS: The interobserver agreement limits of the combined method [-0.78 s(-1) (95% CI: -0.95 to -0.6 s(-1)) to 0.57 s(-1) (95% CI: 0.4-0.75 s(-1))] were clearly superior to those shown by color M-Mode TDI without B-Mode pre-assessment [-1.35 s(-1) (95% CI: -1.72 to -0.98 s(-1)) to 1.5 s(-1) (95% CI: 1.13-1.87 s(-1))]. CONCLUSIONS: An initial estimation by pulsed TDI is useful to achieve a clinically acceptable reproducibility of MVG measurements.
Authors: M Uematsu; K Miyatake; N Tanaka; H Matsuda; A Sano; N Yamazaki; M Hirama; M Yamagishi Journal: J Am Coll Cardiol Date: 1995-07 Impact factor: 24.094
Authors: J Garot; G A Derumeaux; J L Monin; A M Duval-Moulin; M Simon; D Pascal; A Castaigne; J L Dubois-Randé; B Diebold; P Guéret Journal: Eur Heart J Date: 1999-04 Impact factor: 29.983