| Hemodynamic performance of the Edwards Prima stentless valve. | |
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MedLine Citation:
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PMID: 9130120 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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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. |
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Authors:
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U Bortolotti; A Milano; G Tartarini; G Scioti; G Borzoni; C Nardi; E Puccioni |
Publication Detail:
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Type: Clinical Trial; Journal Article |
Journal Detail:
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Title: The Journal of heart valve disease Volume: 6 ISSN: 0966-8519 ISO Abbreviation: J. Heart Valve Dis. Publication Date: 1997 Mar |
Date Detail:
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Created Date: 1997-06-27 Completed Date: 1997-06-27 Revised Date: 2007-11-15 |
Medline Journal Info:
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Nlm Unique ID: 9312096 Medline TA: J Heart Valve Dis Country: ENGLAND |
Other Details:
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Languages: eng Pagination: 134-7 Citation Subset: IM |
Affiliation:
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Department of Cardiac Surgery, University of Pisa Medical School, Italy. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Aged Aged, 80 and over Aortic Valve Insufficiency / surgery* Bioprosthesis* Echocardiography Equipment Safety Evaluation Studies as Topic Female Follow-Up Studies Heart Valve Prosthesis Hemodynamics / physiology Humans Male Postoperative Complications / physiopathology*, ultrasonography Prognosis Prosthesis Design |
| Comments/Corrections | |
Comment In:
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J Heart Valve Dis. 1997 Jul;6(4):441-2
[PMID:
9263879
]
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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