Real-time comparison of pressure-predicted and Doppler-measured jet velocities distal to left-sided obstructions throughout systole

We have demonstrated a new real-time technique that allows direct and accurate comparison throughout the entire systolic portion of the cardiac cycle of instantaneous jet velocities predicted by pressure differences across obstructions with those simultaneously measured by Doppler echocardiography....

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Bibliographic Details
Published in:The American journal of cardiology 1995-10, Vol.76 (11), p.853-855
Main Authors: Zamora, Rolando, Donnerstein, Richard L.
Format: Article
Language:English
Subjects:
Adolescent
Aorta - physiopathology
Aortic Coarctation - diagnostic imaging
Aortic Coarctation - physiopathology
Aortic Diseases - diagnostic imaging
Aortic Diseases - physiopathology
Biological and medical sciences
Blood Flow Velocity
Blood Pressure
Cardiovascular system
Child
Child, Preschool
Constriction, Pathologic - diagnostic imaging
Constriction, Pathologic - physiopathology
Echocardiography, Doppler
Humans
Infant
Investigative techniques, diagnostic techniques (general aspects)
Manometry
Medical imaging
Medical sciences
Systole
Ultrasonic investigative techniques
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Description
Summary:We have demonstrated a new real-time technique that allows direct and accurate comparison throughout the entire systolic portion of the cardiac cycle of instantaneous jet velocities predicted by pressure differences across obstructions with those simultaneously measured by Doppler echocardiography. Peak Doppler velocities closely approximate velocities predicted by high-fidelity pressure measurements. Differences may be explained by omission of proximal velocities and the presence of pressure recovery.
ISSN:0002-9149
1879-1913
DOI:10.1016/S0002-9149(99)80246-X