Document Detail


Upright bicycle exercise echocardiography in patients with myocardial infarction shows lack of diastolic, but not systolic, reserve: a tissue Doppler study.
MedLine Citation:
PMID:  19060314     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
AIMS: The aim of this feasibility study was to compare systolic and diastolic left ventricular (LV) function during upright bicycle exercise in patients with chronic myocardial infarction (MI). METHODS AND RESULTS: Eighteen patients with first-time MI and no signs of heart failure at rest underwent upright bicycle exercise at 25, 50, and 75 W, and were compared with 18 age-matched controls. Systolic (S') and early (E') mitral annular velocities and early mitral filling velocity (E) were measured at each stage. LV ejection fraction was lower in the MI group (46 vs. 54%, P < 0.01), while end-diastolic volumes were similar. S' was lower in the MI patients, but increased during exercise in both groups. E' was similar at rest, but increased in the control group only. Early mitral filling (E) increased in both groups, thus the E/E' ratio increased during exercise in the MI group only. Heart rate was similar in both groups. CONCLUSIONS: Upright exercise echocardiography is feasible and can unmask early diastolic dysfunction and increased LV filling pressures in patients with small prior MIs.
Authors:
Lene A Rustad; Brage H Amundsen; Stig A Slørdahl; Asbjørn Støylen
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2008-12-06
Journal Detail:
Title:  European journal of echocardiography : the journal of the Working Group on Echocardiography of the European Society of Cardiology     Volume:  10     ISSN:  1532-2114     ISO Abbreviation:  Eur J Echocardiogr     Publication Date:  2009 Jun 
Date Detail:
Created Date:  2009-06-01     Completed Date:  2009-07-30     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  100890618     Medline TA:  Eur J Echocardiogr     Country:  England    
Other Details:
Languages:  eng     Pagination:  503-8     Citation Subset:  IM    
Affiliation:
Department of Circulation and Medical Imaging, Norwegian University of Science and Technology, Trondheim N-7489, Norway.
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MeSH Terms
Descriptor/Qualifier:
Aged
Biomechanics
Blood Flow Velocity
Case-Control Studies
Chronic Disease
Diastole / physiology
Echocardiography, Doppler
Exercise Test / methods
Feasibility Studies
Female
Humans
Image Interpretation, Computer-Assisted
Male
Middle Aged
Myocardial Infarction / physiopathology,  ultrasonography*
Systole / physiology
Ventricular Dysfunction, Left / physiopathology,  ultrasonography*

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