Haemodynamics and left ventricular mass regression: a comparison of the stentless, stented and mechanical aortic valve replacement

Objective: Our objective was to compare the degree of change in hemodynamics and left ventricular mass (LVM) regression after aortic valve replacement (AVR) with stentless, stented and mechanical valves. Methods: Patients greater than 59 years of age had AVR for aortic stenosis with the stentless xe...

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Bibliographic Details
Published in:European journal of cardio-thoracic surgery 1998-05, Vol.13 (5), p.572-575
Main Authors: Thomson, Helen L., O’Brien, Mark F., Almeida, Aubrey A., Tesar, Peter J., Davison, Malcolm B., Burstow, Darryl J.
Format: Article
Language:English
Subjects:
Aged
Aortic Valve - surgery
Aortic valve replacement
Aortic Valve Stenosis - complications
Aortic Valve Stenosis - physiopathology
Aortic Valve Stenosis - surgery
Biological and medical sciences
Bioprosthesis
Cardiology. Vascular system
Echocardiography
Endocardial and cardiac valvular diseases
Female
Heart
Heart Valve Prosthesis
Heart Valve Prosthesis Implantation
Hemodynamics
Humans
Hypertrophy, Left Ventricular - diagnostic imaging
Hypertrophy, Left Ventricular - etiology
Left ventricular mass
Male
Medical sciences
Middle Aged
Prosthesis Design
Stentless porcine valve
Stents
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Summary:Objective: Our objective was to compare the degree of change in hemodynamics and left ventricular mass (LVM) regression after aortic valve replacement (AVR) with stentless, stented and mechanical valves. Methods: Patients greater than 59 years of age had AVR for aortic stenosis with the stentless xenograft (Cryolife–O'Brien, CLOB), stented xenograft (Carpentier–Edwards, C–E) or mechanical valve (ATS). One-hundred and forty-two patients received stentless, 40 stented, and 69 mechanical valves (mean age 74±6 vs. 72±7 and 67±6 years, respectively). Serial echocardiography was performed. Results: The left ventricular outflow tract diameter was similar pre-operatively in the stentless versus the stented versus the mechanical groups (2.2±0.4 vs. 2.3±0.2 vs. 2.2±0.3 cm; P, n.s). The effective orifice area was larger immediately post-operatively in the stentless versus the stented or the mechanical group (2.4±0.4 vs. 2.0±0.6 vs. 2.0±0.7 cm2, P=0.0001 for both comparisons). The peak aortic gradient at 6 months was significantly less in the stentless versus the stented and mechanical groups (15±7 vs. 25±9 vs. 22±9 mmHg, P
ISSN:1010-7940
1873-734X
DOI:10.1016/S1010-7940(98)00058-X