Bronchitis is an inflammation of the bronchial tubes caused by viruses, bacteria, smoke, or other irritants. It can be acute or chronic. Acute bronchitis causes a cough with sputum, sore throat, fever and lasts a few weeks. Chronic bronchitis is persistent and can be caused by smoking. Nursing management includes assessing cough and sputum, teaching airway clearance techniques, administering medications, preventing infections, and reducing anxiety through education. With treatment, acute bronchitis usually resolves without complications, while chronic bronchitis requires ongoing management.