Document Detail


The medtronic intact porcine valve: ten-year clinical review.
MedLine Citation:
PMID:  9832693     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
OBJECTIVE: Our objective was to assess the long-term mortality and morbidity associated with the Medtronic Intact valve (Medtronic, Inc, Minneapolis, Minn). METHOD: Between 1983 and 1996, 447 patients (280 men and 167 women) received 466 Intact valves: 280 aortic, 156 mitral, and 30 tricuspid. The mean age was 57 years (median 63 years), with 45% younger than 60 years. The mean New York Heart Association class was 3.1. The follow-up was 98% complete and extended for 39 months (1-154 months) and 1324 patient-years. There were 32 valves at risk at 10 years after implantation. Doppler echocardiography was performed whenever possible in patients followed up for longer than 4 years (mean 8 years) after implantation. RESULTS: Ten-year overall actuarial survival was 30% +/- 6% (14% +/- 7% for New York Heart Association classes IV-V and 39% +/- 8% for classes I-III). At 10 years freedom from infective endocarditis was 92% +/- 3%, freedom from thromboembolism was 80% +/- 5%, and freedom from nonstructural valve deterioration was 95% +/- 2%. Ten-year freedom from explantation was 64% +/- 6%, freedom from valve-related events was 51% +/- 6%, and freedom from valve-related death was 88% +/- 3%. There were 26 examples of structural valve deterioration, mainly caused by leaflet calcification (in 17 cases) and by buttress detachment (in 6 cases). In the aortic position at 10 years freedom from structural valve deterioration was 81% +/- 9%, but with only 1 event in patients older than 40 years (freedom 92% +/- 8%) and 100% freedom in patients older than 60 years. There was also 100% freedom from structural valve deterioration in the tricuspid position. In the mitral position freedom was 65% +/- 8%, with no significant difference between age groups. CONCLUSION: The Intact valve provides superior results in the aortic position in patients older than 40 years and in the tricuspid position at all ages.
Authors:
B G Barratt-Boyes; W M Jaffe; R M Whitlock
Related Documents :
14699593 - Long-term prognosis for guillain-barré syndrome: evaluation of prognostic factors and ...
17547543 - Experience with cardiac valve operations in cape york peninsula and the torres strait i...
8620273 - Type i gastric ulcer treated by parietal cell vagotomy and mucosal ulcerectomy.
Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  The Journal of thoracic and cardiovascular surgery     Volume:  116     ISSN:  0022-5223     ISO Abbreviation:  J. Thorac. Cardiovasc. Surg.     Publication Date:  1998 Dec 
Date Detail:
Created Date:  1999-01-06     Completed Date:  1999-01-06     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0376343     Medline TA:  J Thorac Cardiovasc Surg     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  1005-14     Citation Subset:  AIM; IM    
Affiliation:
Departments of Cardiac Surgery, Cardiology and Clinical Physiology, and Statistics, Green Lane Hospital, Auckland, New Zealand.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:
Adolescent
Adult
Aged
Aged, 80 and over
Bioprosthesis*
Child
Female
Follow-Up Studies
Heart Valve Diseases / mortality,  surgery*
Heart Valve Prosthesis*
Heart Valve Prosthesis Implantation / instrumentation*,  mortality
Humans
Male
Middle Aged
Postoperative Complications
Prosthesis Design
Retrospective Studies
Survival Rate

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  Long-term survival of patients with coronary artery disease and left ventricular dysfunction: implic...
Next Document:  Midterm clinical and angiographic results of radial artery grafts used for myocardial revascularizat...