Methacholine challenge testing (MCT), also sometimes described as bronchoprovocation testing, is widely performed for both research and diagnostic purposes. MCT is clinically useful when the patient presents with a history of symptoms suggesting…
Chronic obstructive pulmonary disease (COPD) was the third leading cause of mortality in the United States in 2009 and accounts for millions of dollars in health care expenses annually. It is characterized by slow declines in functional ability and…
Chronic obstructive pulmonary disease (COPD) affects 15 million people and is the fourth leading cause of death in the United States. It places a considerable burden on the healthcare system, with exacerbations contributing to a significant…