Document Detail

Hemodynamic performance of the Edwards Prima stentless valve.
MedLine Citation:
PMID:  9130120     Owner:  NLM     Status:  MEDLINE    
BACKGROUND AND AIM OF THE STUDY: Stentless porcine valves are considered to have a superior hemodynamic performance when compared with stented bioprostheses. In the present study we report our initial experience with the Edwards Prima stentless valve (EPSV), focusing on the hemodynamic performance of this device evaluated by means of transthoracic two-dimensional (2D) Doppler echocardiography. METHODS: Between December 1994 and August 1995, 23 patients underwent aortic valve replacement with the EPSV implanted in the subcoronary position. Evaluation of hemodynamic performance of the EPSV was assessed before discharge (one week) and at six months follow up by means of transthoracic 2D echocardiography. RESULTS: There were no operative deaths and no major postoperative complications. Hemodynamic data were available for comparison at one week and six months in 18 patients (23 mm, n = 8; 25 mm, n = 10). For 23 mm EPSV, peak gradient varied from 42.7 +/- 10.2 mmHg at one week to 29.7 +/- 9.8 mmHg at six months (p = 0.01); for 25 mm EPSV, peak gradient varied from 33.6 +/- 10.6 mmHg at one week to 29.5 +/- 6.5 mmHg at six months (p = N.S.). CONCLUSIONS: The EPSV, when used in the subcoronary position, has been associated with high early transprosthetic gradients which only partly regress at six months. Gradients are probably caused by the inward folding of the Dacron cloth beneath the right coronary ostium and were recorded especially in patients with aortic stenosis in whom the right coronary ostium was close to the aortic annulus. In such patients alternative implantation techniques should be considered.
U Bortolotti; A Milano; G Tartarini; G Scioti; G Borzoni; C Nardi; E Puccioni
Publication Detail:
Type:  Clinical Trial; Journal Article    
Journal Detail:
Title:  The Journal of heart valve disease     Volume:  6     ISSN:  0966-8519     ISO Abbreviation:  J. Heart Valve Dis.     Publication Date:  1997 Mar 
Date Detail:
Created Date:  1997-06-27     Completed Date:  1997-06-27     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  9312096     Medline TA:  J Heart Valve Dis     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  134-7     Citation Subset:  IM    
Department of Cardiac Surgery, University of Pisa Medical School, Italy.
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MeSH Terms
Aged, 80 and over
Aortic Valve Insufficiency / surgery*
Equipment Safety
Evaluation Studies as Topic
Follow-Up Studies
Heart Valve Prosthesis
Hemodynamics / physiology
Postoperative Complications / physiopathology*,  ultrasonography
Prosthesis Design
Comment In:
J Heart Valve Dis. 1997 Jul;6(4):441-2   [PMID:  9263879 ]

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