Doppler ultrasonic assessment of aortic stenosis by analysis of axillary arterial blood velocity upstroke time.
Rate-corrected velocity upstroke time (VUT) was calculated from analogue Doppler ultrasound recordings of axillary artery blood flow velocity in 25 patients with aortic stenosis documented by cardiac catheterization and in 14 normal individuals. The mean VUT in normal individuals was 0.11 +/- 0.02 second (+/- 1 SD), which was significantly lower than that of patients with aortic stenosis: 0.15 +/- 0.05 second (P less than 0.005). The VUT correlated with the aortic valve index and the aortic valve mean pressure gradient with correlation coefficients of 0.62 and 0.64, respectively (P less than 0.005). Arterial blood flow velocity assessment by Doppler ultrasound may be a useful noninvasive technique to evaluate patients with aortic valve disease.
D000328:Adult; D000368:Aged; D001021:Aortic Valve / Q000503:physiopathology; D001024:Aortic Valve Stenosis / Q000175:diagnosis* / Q000503:physiopathology; D001366:Axillary Artery; D001783:Blood Flow Velocity; D005069:Evaluation Studies as Topic; D005260:Female; D006334:Heart Function Tests / Q000379:methods*; D006801:Humans; D008297:Male; D008875:Middle Aged; D014463:Ultrasonography