Document Detail


Dynamic hyperinflation during exercise in patients with precapillary pulmonary hypertension.
MedLine Citation:
PMID:  22100539     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
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.
Authors:
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:
Type:  JOURNAL ARTICLE     Date:  2011-11-17
Journal Detail:
Title:  Respiratory medicine     Volume:  -     ISSN:  1532-3064     ISO Abbreviation:  -     Publication Date:  2011 Nov 
Date Detail:
Created Date:  2011-11-21     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8908438     Medline TA:  Respir Med     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2011 Elsevier Ltd. All rights reserved.
Affiliation:
Department of Internal Medicine, University of Giessen Lung Center, Giessen, Germany.
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