The effects of home oxygen therapy on energy metabolism in patients with COPD.

Introduction In recent years, COPD has shown an increasing trend in morbidity and mortality rate compared to other diseases. 1 Its incidence has increased in developing countries and is an important socioeconomic burden for these countries. 1 Although smoking is considered to be the leading cause of COPD (which is characterized by completely nonreversible and often progressive airflow obstruction), only 15% of smokers develop COPD, 1 suggesting that other factors contribute to the formation of the disease.

also in 63,971 other papers