| Effects of posture on metabolic and hemodynamic predischarge exercise response after acute myocardial infarction. | |
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MedLine Citation:
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PMID: 2115287 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Predischarge exercise testing after acute myocardial infarction (AMI) is an important noninvasive modality for risk stratification. To study the impact of position on cardiopulmonary exercise response, 30 patients performed symptom-limited upright treadmill and supine bicycle ergometry exercise an average of 8 days after an AMI. The exercise sequence was randomly assigned with a minimum 4-hour interval between tests. Exercise time and peak oxygen consumption were significantly greater in the upright position (7.0 +/- 2.0 vs 5.6 +/- 2.0 minutes; p less than 0.001 and 14.9 vs 12.0 ml/min/kg; p less than 0.001, respectively). Compared to the supine position, exercise in the upright position was associated with a significant increased incidence of ischemic exercise-induced ST-segment depression (33 vs 20%; p less than 0.03), and chest pain (20 vs 10%; p less than 0.04). Thus, position is an important determinant of myocardial ischemic response and exercise tolerance in patients who perform symptom-limited exercise tests early after AMI. |
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Authors:
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L J Shaw; L T Younis; K S Stocke; A K Sharma; B R Chaitman |
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Publication Detail:
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Type: Clinical Trial; Journal Article; Randomized Controlled Trial |
Journal Detail:
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Title: The American journal of cardiology Volume: 66 ISSN: 0002-9149 ISO Abbreviation: Am. J. Cardiol. Publication Date: 1990 Jul |
Date Detail:
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Created Date: 1990-08-21 Completed Date: 1990-08-21 Revised Date: 2007-11-15 |
Medline Journal Info:
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Nlm Unique ID: 0207277 Medline TA: Am J Cardiol Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 134-9 Citation Subset: AIM; IM; S |
Affiliation:
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Department of Internal Medicine, St. Louis University School of Medicine, Missouri 63110-0250. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adult Aged Blood Pressure Carbon Dioxide / physiology Coronary Angiography Electrocardiography Exercise Test* Female Heart Rate Hemodynamics* Humans Male Middle Aged Myocardial Infarction / metabolism, physiopathology*, radiography Oxygen Consumption Posture / physiology* Pulmonary Gas Exchange Tidal Volume |
| Chemical | |
Reg. No./Substance:
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124-38-9/Carbon Dioxide |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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