| Quantitative analysis of semi-supine exercise echocardiography--influence of age on myocardial Doppler imaging indices. | |
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MedLine Citation:
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PMID: 16869446 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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OBJECTIVES: This study was performed to evaluate the feasibility of quantitative analysis of exercise echocardiography using pulsed wave Doppler myocardial imaging (DMI) and to examine the relation between age and DMI parameters at rest and during graded exercise in normal subjects. METHODS AND RESULTS: Seventy-two healthy volunteers were divided into three age groups (group I, age < or = 40 years, group II, age 41 - 59 years and group III, age > or = 60 years), and underwent a semi-supine exercise echocardiogram. Peak systolic velocity (SV), time to peak SV (TPV), systolic velocity time integral (VTI) and peak diastolic velocities (VE and VA) were measured off-line. There was a heterogeneity in DMI parameters between different myocardial walls and a gradient was found between basal and mid segments. Both persisted during exercise. Group I had significantly higher TPV than groups II and III. Increase in workload was accompanied by an increase in velocities, while TPV decreased. Differences between groups persisted throughout exercise. CONCLUSIONS: Off-line measurements of DMI parameters are feasible during exercise. SV and E decline as age increases while A increases. SV already increases at low charge exercise and may serve as a quantitative marker for the detection of myocardial viability. Change of the absolute DMI velocity values during exercise may provide a better indicator of ischaemia or viability than the absolute values themselves. |
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Authors:
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Evdokia Petropoulou; Patrizio Lancellotti; Luc A Piérard |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Acta cardiologica Volume: 61 ISSN: 0001-5385 ISO Abbreviation: Acta Cardiol Publication Date: 2006 Jun |
Date Detail:
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Created Date: 2006-07-27 Completed Date: 2007-01-12 Revised Date: 2009-11-03 |
Medline Journal Info:
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Nlm Unique ID: 0370570 Medline TA: Acta Cardiol Country: Belgium |
Other Details:
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Languages: eng Pagination: 271-7 Citation Subset: IM |
Affiliation:
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Department of Cardiology, University Hospital of Liège, Belgium. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Age Factors Aged Blood Pressure / physiology Diastole / physiology Echocardiography / methods* Echocardiography, Doppler* Echocardiography, Stress / methods* Electrocardiography Feasibility Studies Female Heart Rate / physiology Humans Image Processing, Computer-Assisted* Male Middle Aged Myocardial Contraction / physiology Physical Exertion / physiology Reference Values Statistics as Topic Stroke Volume / physiology Supine Position / physiology* Systole / physiology |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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