| Correlation of subjective questionnaires with cardiac function as determined by exercise testing in a pediatric population. | |
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MedLine Citation:
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PMID: 20811883 Owner: NLM Status: In-Process |
Abstract/OtherAbstract:
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BACKGROUND: Although exercise testing is an important objective method used to assess cardiopulmonary function, subjective assessment often is used as a proxy in the clinical setting. This study aimed to determine whether responses to a subjective functional capacity questionnaire administered to parents and patients in a pediatric exercise laboratory correlate with objective assessment of functional capacity, measured by peak oxygen consumption during maximal voluntary exercise testing. METHODS: Subjective questionnaire responses and exercise test results collected over 10 years were retrospectively analyzed. Symptoms and physical capabilities were assessed using a 6-point Likert scale regarding the ability to attend school/work, walk, climb stairs, and run, as well as the frequency of fatigue, palpitations, and chest pain. Values of 0 to 3 were considered abnormal, whereas values of 4-5 were regarded as normal. Exercise testing was performed on a stationary cycle ergometer with a continuous ramping protocol. Heart rate and oxygen saturation were continuously monitored. Blood pressures and electrocardiograms (ECGs) were obtained at 2-min intervals. Metabolic gas analysis was performed using a breath-by-breath method. The results of the exercise testing were normalized for body size and expressed as a percentage of predicted peak oxygen consumption (%pVO(2)). RESULTS: Very weak but statistically significant correlations (τ < 0.25; P < 0.05) between the scores of the school/work, walking, stair climbing, running, and fatigue items and %pVO(2) were found using Kendall's rank correlations. CONCLUSIONS: The subjective Likert scales used to assess basic physical capacity and cardiac-associated symptoms have limited ability to predict actual functional capacity as measured by %pVO(2) achieved. The very weak rank-order correlation between %pVO(2) achieved and the subjective reporting of the ability to attend school/work, walk, climb stairs, and run has low clinical significance and will not be useful in predicting functional capacity within the clinic setting. |
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Authors:
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Rebekah Burns; Inger Olson; Jeffrey Kazmucha; Raymond Balise; Rita Chin; Clifford Chin |
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Publication Detail:
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Type: Journal Article Date: 2010-09-03 |
Journal Detail:
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Title: Pediatric cardiology Volume: 31 ISSN: 1432-1971 ISO Abbreviation: Pediatr Cardiol Publication Date: 2010 Oct |
Date Detail:
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Created Date: 2010-10-04 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8003849 Medline TA: Pediatr Cardiol Country: United States |
Other Details:
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Languages: eng Pagination: 1043-8 Citation Subset: IM |
Affiliation:
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Lucile Packard Children's Hospital, Palo Alto, CA, USA. raburns@childrensmemorial.org |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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