© 2004 BMJ Publishing Group Ltd & British Thoracic Society
EDITORIAL
Oxygen therapy in COPD
Oxygen: the good, the bad, and the necessary...
Correspondence to:
Correspondence to:
T Troosters PhD
Respiratory Rehabilitation and Respiratory Division, UZ Gasthuisberg, Herestraat 49, B-3000 Leuven, Belgium; Thierry.Troosters@med.kuleuven.ac.be
The use of oxygen therapy in COPD needs more careful study
Keywords: chronic obstructive pulmonary disease; oxygen; oxidative stress
| The first 150 words of the full text of this article appear below. |
Long term oxygen therapy (LTOT) is one of the few treatments which has significant survival benefits in patients with severe hypoxaemia. It may modify disease progression, as indicated by a slower progression of hypoxia induced pulmonary hypertension,1–4 and the acute reduction in pulmonary hypertension to oxygen administration has been suggested as predictive for the survival benefit in individual patients. Reduced pulmonary vascular resistance and hence the reduced load on the right heart is probably the most important working mechanism of LTOT. In less severe hypoxaemic patients the benefits of LTOT on survival are less clear.5 Other benefits of oxygen administration are generally accepted. Reduced ventilation, especially during exercise, helps to avoid dynamic hyperinflation and hence reduces symptoms and increases exercise tolerance in the majority of patients with chronic obstructive pulmonary disease (COPD), even in patients with mild hypoxaemia.6 There is also some evidence to support the
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