Assessment of aortic valve stenosis severity: A new index based on the energy loss concept

• Published in: Circulation (New York, N.Y.) Vol. 101; no. 7; pp. 765 - 771
• Main Authors: GARCIA, D, PIBAROT, P, DUMESNIL, J. G, SAKR, F, DURAND, L.-G
• Format: Journal Article
• Language: English
• Published: Hagerstown, MD Lippincott Williams & Wilkins 22.02.2000; American Heart Association, Inc
• Subjects: Adult; Aged; Aged, 80 and over; Aortic Valve - diagnostic imaging; Aortic Valve - physiopathology; Aortic Valve Stenosis - diagnostic imaging; Aortic Valve Stenosis - physiopathology; Biological and medical sciences; Cardiovascular system; Echocardiography, Doppler; Energy Metabolism; Female; Hemodynamics; Humans; Investigative techniques, diagnostic techniques (general aspects); Male; Medical sciences; Middle Aged; Regional Blood Flow; Severity of Illness Index; Ultrasonic investigative techniques; Ventricular Function, Left; Sonography; Doppler ultrasound study; Human; Echocardiography; Cardiovascular disease; Exploration; Narrowing; Corporal biometry; Energy loss; Treatment; Cardiac valvular disease; Graft; Severity score; Hemodynamics; Aortic valve

Fluid energy loss across stenotic aortic valves is influenced by factors other than the valve effective orifice area (EOA). We propose a new index that will provide a more accurate estimate of this energy loss. An experimental model was designed to measure EOA and energy loss in 2 fixed stenoses and...