Medications

Tamiflu doesn't offer relief promised, study finds

For the nearly 62 million Americans infected with influenza each year, oeseltamivir, commonly called Tamiflu, promises to offer relief. New research from the University of Georgia finds the medication may not have all of ...

Health

The nicotine in e-cigarettes appears to impair mucus clearance

E-cigarette vaping with nicotine appears to hamper mucus clearance from the airways, according to new research published online in the American Thoracic Society's American Journal of Respiratory and Critical Care Medicine.

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Bronchitis

Bronchitis is inflammation of the mucous membranes of the bronchi, the airways that carry airflow from the trachea into the lungs. Bronchitis can be divided into two categories, acute and chronic, each of which has unique etiologies, pathologies, and therapies.

Acute bronchitis is characterized by the development of a cough, with or without the production of sputum, mucus that is expectorated (coughed up) from the respiratory tract. Acute bronchitis often occurs during the course of an acute viral illness such as the common cold or influenza. Viruses cause about 90% of cases of acute bronchitis, whereas bacteria account for fewer than 10%.

Chronic bronchitis, a type of chronic obstructive pulmonary disease, is characterized by the presence of a productive cough that lasts for three months or more per year for at least two years. Chronic bronchitis most often develops due to recurrent injury to the airways caused by inhaled irritants. Cigarette smoking is the most common cause, followed by air pollution and occupational exposure to irritants.

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