Linked Life Data

6636932

Source:http://linkedlifedata.com/resource/pubmed/id/6636932

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
9
pubmed:dateCreated
1983-12-20
pubmed:abstractText
In order to establish the influence of prosthetic valve replacement on the natural course of mitral, aortic, and double-valve disease of NYHA class III and IV, the progress of 359 patients with Björk-Shiley mitral-valve prostheses (BSM), 317 with aortic valve prostheses, and 107 with double valve prostheses was compared with that of patients who had been treated medically. In this last group of patients, valve replacement had been recommended in the period 1968-1976, but for various reasons had not been carried out. Cumulative survival rates after 8 years were 77% for the BSM group, but only 32% for the medically treated group (p less than 0.0001). One year after operation, 70% of the BSM patients showed an improvement equivalent to one NYHA class, and in the majority this was still apparent after 5 years. In patients with aortic-valve incompetence, cumulative survival rates were 86% for the surgically treated group and 32% for the medically treated group (p less than 0.00001). In aortic-valve stenosis, these differences of cumulative survival rates were even more pronounced (p less than 0.000001), and were calculated to be 85% in surgically treated and 10% in medically treated patients. Clinical improvement in the BSA group averaged 1.5 NYHA classes. The 5-year survival rate for the patients with mitral and aortic-valve disease was 32%, while following doublevalve replacement it was 67% (p less than 0.005). Clinical improvement after double-valve replacement was similar to that following mitral-valve replacement. Prosthetic heart-valve replacement significantly prolongs life in patients with isolated mitral- or aortic-valve lesions as well as in patients with double-valve disease of NYHA classes III and IV. Even in the early years of the study, when the operative mortality was relatively high, the surgically treated groups had a significantly higher survival rate than the conservatively treated groups, and this was already apparent at an early stage in the follow-up period. Improvement of functional capacity and relief of symptoms amount to a difference of approximately one NYHA class in mitral and double-valve disease and of approximately 1.5 NYHA classes in aortic-valve disease.
pubmed:language
ger
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Sep
pubmed:issn
0300-5860
pubmed:author
pubmed:issnType
Print
pubmed:volume
72
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
494-503
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1983
pubmed:articleTitle
[Effect of prosthetic heart valve replacement on the natural course of isolated mitral and aortic as well as multivalvular diseases. Clinical results in 783 patients up to 8 years following implantation of the Björk-Shiley tilting disc prosthesis].
pubmed:publicationType
Journal Article, Comparative Study, English Abstract