Bronchoscopy is an important and useful tool in the management and care of critically patients. Bronchoscopy can aid in diagnosing pulmonary pathology by direct visualization of the tracheobronchial tree as well as acquisition of deep sampling for culture or in select cases, tissue biopsy. Pulmonology doctors in Hyderabad need to be aware of the physiologic effects, indications, contraindications and complications of bronchoscopy so that patients can be properly selected and derive benefit from the procedure.