Chapter 30: Lower Respiratory Problems

The infectious disease section explores acute bronchitis management through supportive care and bronchodilator therapy, pertussis treatment with macrolide antibiotics, and extensive pneumonia classification including community-acquired, hospital-acquired, aspiration, necrotizing, and opportunistic variants, with detailed antibiotic protocols and preventive vaccination strategies. Tuberculosis receives thorough examination, covering Mycobacterium tuberculosis transmission patterns, screening methods including tuberculin skin tests and interferon-gamma release assays, and multi-drug treatment regimens requiring directly observed therapy to ensure compliance and prevent resistance. Restrictive pulmonary conditions include atelectasis pathophysiology, pleuritic pain management, pleural effusion drainage procedures, idiopathic pulmonary fibrosis progression, and sarcoidosis as a systemic granulomatous disorder. Traumatic chest injuries encompass rib fractures, flail chest mechanics, various pneumothorax types including tension pneumothorax as a medical emergency, hemothorax blood accumulation, and chylothorax lymphatic drainage disruption. Vascular complications feature pulmonary embolism pathogenesis from thrombotic, fat, or air emboli with diagnostic approaches using computed tomography angiography and ventilation-perfusion scanning, anticoagulation therapy protocols, and thrombolytic interventions. Pulmonary hypertension classification distinguishes idiopathic from secondary forms, detailing right ventricular strain leading to cor pulmonale development, with treatment algorithms including vasodilators, endothelin receptor antagonists, and phosphodiesterase inhibitors. Environmental lung diseases address occupational exposures causing pneumoconiosis, asbestosis, and hypersensitivity pneumonitis, emphasizing prevention through workplace safety measures and early detection protocols.