Document Detail


Minimal requirement of effective dilation diameter of balloon(s) in percutaneous transluminal mitral valvotomy.
MedLine Citation:
PMID:  2634467     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
40 patients are included to study the minimal requirement of effective dilation diameter of balloon(s) in performing percutaneous transluminal mitral valvotomy (PTMV) to obtain good hemodynamic and long-term follow-up consequences. The patients are divided into 2 groups depending on the ratio of effective dilation diameter of balloon(s) (determined by calculating the cross-sectional area of the oval enveloping the one or two balloons and then taking the diameter of the circle with the same area) to mitral annular diameter (determined by 2-dimensional echocardiography) (Balloon-Mitral Anular Ratio, BMAR). BMAR in group 1 may be equal to or greater than 0.80 or 0.90, BMAR in group 2 may be less than 0.80 or 0.90. From the careful analysis, the statistically significant immediate hemodynamic improvement, e.g. the reduction of trans-valvular pressure gradient, left atrial pressure, pulmonary artery systolic pressure, the increase of mitral valve area, can be obtained even BMAR is less than 0.80. However, the increase of stroke volume index after PTMV can only be obtained with the BMAR equal to or greater than 0.80. The long-term improvement, determined by greater increment of exercise duration, is also only obtained if the BMAR equal to or greater than 0.80 at PTMV. Therefore, we conclude that to obtain the adequate and satisfactory immediate hemodynamic and long-term follow-up results of PTMV, the BMAR must exceed 0.80.
Authors:
C Y Chen; S L Lin; J P Pan; M S Chang
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Zhonghua yi xue za zhi = Chinese medical journal; Free China ed     Volume:  44     ISSN:  0578-1337     ISO Abbreviation:  Zhonghua Yi Xue Za Zhi (Taipei)     Publication Date:  1989 Nov 
Date Detail:
Created Date:  1990-06-05     Completed Date:  1990-06-05     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  0005327     Medline TA:  Zhonghua Yi Xue Za Zhi (Taipei)     Country:  TAIWAN    
Other Details:
Languages:  eng     Pagination:  287-92     Citation Subset:  IM    
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MeSH Terms
Descriptor/Qualifier:
Adult
Aged
Balloon Dilatation / methods*
Blood Pressure
Female
Follow-Up Studies
Humans
Male
Middle Aged
Mitral Valve Stenosis / therapy*
Stroke Volume

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


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