Linked Life Data

8563996

Source:http://linkedlifedata.com/resource/pubmed/id/8563996

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PredicateObject
rdf:type
lifeskim:mentions
pubmed:dateCreated
1996-3-4
pubmed:abstractText
The clinical significance of the chordae tendinae regarding postoperative left ventricular performance was evaluated in 148 patients with mitral regurgitation or mitral stenosis who underwent either mitral valve replacement using St. Jude Medical valve with complete chordal preservation, or with conventional mitral valve replacement, or valve repair. Mitral valve replacement preserving the autologous chordae tendinae (n = 28) or replacing them with Gore-Tex sutures (n = 16) was performed in 44 patients, 24 with mitral regurgitation and 20 with mitral stenosis. Their hemodynamic parameters were compared to those of patients who underwent conventional mitral valve replacement involving 25 with mitral regurgitation and 28 with mitral stenosis, or who underwent valve repair in 24 with mitral regurgitation, or commissurotomy in 27 patients with mitral stenosis. The LV performance was analyzed by cineangiography in the early (mean 1.2 months), and by multiple gated blood scintigraphy (MUGA), or echocardiography (UCG) in the late postoperative periods (mean 5.4 years) in the three groups of patients. In the mitral regurgitation group, the LV ejection fraction (EF) was unchanged in the chordal preserved group, but it was decreased in the conventional replacement and repair groups. The LV contractility index was better in the chordal preserved than in the conventional group. Both the LVEF by MUGA, and LV fractional shortening (FS) by UCG were significantly higher after chordal preservation or repair than after conventional valve replacement. The chordal preserved group exhibited superior LV performance than the conventional group, especially in those with mitral regurgitation and depressed preoperative left ventricular function (EF < 0.50). There were no significant difference between the three groups in patients with mitral stenosis. The results support the concept that maintenance of continuity between the mitral annulus and the papillary muscle has a beneficial effect on postoperative left ventricular performance, especially in patients with mitral regurgitation and depressed preoperative left ventricular function, but had no major effect in patients with mitral stenosis.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Oct
pubmed:issn
0966-8519
pubmed:author
pubmed:issnType
Print
pubmed:volume
4 Suppl 2
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
S181-92; discussion S192-3
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1995
pubmed:articleTitle
Left ventricular function after mitral valve replacement with or without chordal preservation.
pubmed:affiliation
Department of Cardiovascular Surgery, Tenri Hospital, Nara, Japan.
pubmed:publicationType
Journal Article, Clinical Trial, Comparative Study