**Bronchiectasis** ### 🩺 **Overview** **Bronchiectasis** is a **chronic lung condition** characterized by **permanent dilatation and destruction of the bronchial walls**, leading to **chronic infection, inflammation, and mucus accumulation**. --- ### 🔬 **Pathophysiology** 1. **Initial insult**: Infection or obstruction damages the bronchial wall. 2. **Inflammation** → destruction of **elastic and muscular components** of the bronchi. 3. **Permanent dilation** of airways. 4. Impaired **mucociliary clearance** → stasis of secretions → recurrent infections → further damage (vicious cycle). --- ### ⚕️ **Causes / Etiology** * **Post-infective**: Measles, pertussis, tuberculosis, pneumonia. * **Congenital**: Cystic fibrosis, primary ciliary dyskinesia, Kartagener’s syndrome. * **Obstructive**: Tumors, foreign body, lymph node compression. * **Immunodeficiency**: IgG, IgA deficiency. * **Autoimmune**: Rheumatoid arthritis, SLE. * **Allergic bronchopulmonary aspergillosis (ABPA)**. --- ### 💨 **Clinical Features** * **Chronic cough** with **copious purulent sputum** (often three-layered). * **Recurrent chest infections**. * **Hemoptysis** (common). * **Clubbing** of fingers. * **Crackles and wheezes** on auscultation. --- ### 📸 **Investigations** * **HRCT Chest** – *gold standard* (shows dilated bronchi, “tram-track” and “signet-ring” sign). * **Chest X-ray** – cystic shadows, ring shadows. * **Sputum culture** – identify infecting organism. * **Pulmonary function test** – obstructive pattern. * **CBC, immunoglobulins, sweat chloride** (if cystic fibrosis suspected). --- ### 💊 **Management** #### 1. **Medical** * **Antibiotics** (guided by sputum culture). * **Chest physiotherapy** – postural drainage. * **Bronchodilators** (if airway hyperreactivity). * **Mucolytics** (e.g., acetylcysteine). * **Vaccination** – influenza, pneumococcal. #### 2. **Surgical** * **Lobectomy** – for localized disease not responding to medical therapy. * **Lung transplantation** – in end-stage bilateral disease. --- ### ⚠️ **Complications** * Massive hemoptysis. * Lung abscess. * Amyloidosis (rare). * Respiratory failure and cor pulmonale. --- ### 🧠 **Mnemonic (Causes): “COBRA”** * **C** – Cystic fibrosis * **O** – Obstruction * **B** – Bacterial infections (post-infective) * **R** – Rheumatoid / immune causes * **A** – Allergic bronchopulmonary aspergillosis --- ### 🔖 **SEO Tags** bronchiectasis, chronic lung disease, productive cough, HRCT signet ring sign, tram-track sign, postural drainage, cystic fibrosis, airway dilatation, chronic infection, sputum production, bronchiectasis management, respiratory medicine --- Would you like me to create a **summary table or infographic (HTML/CSS/JS)** version for your website or presentation?