| Dynamic hyperinflation during exercise in patients with precapillary pulmonary hypertension. | |
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MedLine Citation:
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PMID: 22100539 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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BACKGROUND: Patients with pulmonary arterial hypertension often present with a mild obstructive lung pattern, however, the functional consequences are not known. METHODS: We analysed flow volume loops during exercise in 61 patients with precapillary pulmonary hypertension (PH) (age 55 ± 14 years) in comparison with 21 patients with COPD (60 ± 12 years), 39 patients with pulmonary fibrosis (58 ± 11 years) and 38 healthy controls (HC) (39 ± 15 years). Inspiratory capacity (IC) was measured at rest, and during maximum exercise (max). RESULTS: HC exhibited a stable IC of 3.0 ± 0.9 l at rest, and at max. A reduction in IC of 2.6 ± 0.8 l at rest to 2.0 ± 0.7 l at max was observed in patients with COPD. Patients with PH exhibited a significant reduction in IC from 2.3 ± 0.6 l at rest to 2.1 ± 0.6 l at max, while patients with pulmonary fibrosis exhibited a stable IC of 1.8 ± 0.6 at rest and 1.7 ± 0.6 l at max. In patients with PH, a weak negative correlation was drawn between the change in IC (%) and peak VO2 (r = -0.29, p = 0.01), as well as with PVR (r = -0.27, p = 0.02). CONCLUSION: Patients with PH demonstrate a characteristic change in IC during exercise, which might contribute to impaired exercise tolerance. |
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Authors:
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Manuel J Richter; Robert Voswinckel; Henning Tiede; Richard Schulz; Christian Tanislav; Andreas Feustel; Rory E Morty; Hossein A Ghofrani; Werner Seeger; Frank Reichenberger |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-11-17 |
Journal Detail:
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Title: Respiratory medicine Volume: - ISSN: 1532-3064 ISO Abbreviation: - Publication Date: 2011 Nov |
Date Detail:
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Created Date: 2011-11-21 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8908438 Medline TA: Respir Med Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
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Copyright © 2011 Elsevier Ltd. All rights reserved. |
Affiliation:
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Department of Internal Medicine, University of Giessen Lung Center, Giessen, Germany. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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