Document Detail


Determination of left ventricular volume using a conductance catheter in the diseased human heart.
MedLine Citation:
PMID:  1478205     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
To validate the accuracy of human left ventricular (LV) volume measured by the conductance catheter method, conductance volume was compared with LV volume measured by biplane angiography in 19 patients with ischaemic heart disease. Angiographic LV volumes were calculated frame by frame and matched with instantaneous conductance volumes. Calibration was determined by both gain constant, 1/alpha, and parallel conductance, alpha V c. The gain constant, 1/alpha, was the ratio of stroke volume measured by the thermodilution method to that measured by the conductance catheter. The parallel conductance, alpha Vc, was estimated by the saline injection method. There was a good correlation between the corrected conductance volume (Vcc) and the angiographic volume (V angio) such that Vcc = 0.94 V angio + 5.3 ml, r = 0.94, P < 0.001. There were no differences in the correlation coefficients between normal and depressed hearts. Compared with the angiographic data, LV end-diastolic volume, end-systolic volume and ejection fraction were determined accurately by the conductance catheter. We conclude that the conductance catheter method, corrected for gain constant and parallel conductance, can accurately and continuously estimate the LV volume throughout the cardiac cycle in the diseased human heart.
Authors:
M Odake; M Takeuchi; H Takaoka; K Hata; Y Hayashi; M Yokoyama
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  European heart journal     Volume:  13 Suppl E     ISSN:  0195-668X     ISO Abbreviation:  Eur. Heart J.     Publication Date:  1992 Nov 
Date Detail:
Created Date:  1993-02-11     Completed Date:  1993-02-11     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8006263     Medline TA:  Eur Heart J     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  22-7     Citation Subset:  IM    
Affiliation:
First Department of Internal Medicine, Kobe University School of Medicine, Japan.
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MeSH Terms
Descriptor/Qualifier:
Aged
Blood Volume / physiology
Cardiac Volume / physiology
Coronary Disease / diagnosis*,  physiopathology
Female
Heart Catheterization*
Heart Function Tests / instrumentation,  methods*
Humans
Male
Middle Aged
Myocardial Contraction / physiology
Stroke Volume / physiology
Ventricular Function, Left / physiology*

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


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