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Bronchiectasis

Permanent dilation of bronchi from recurrent inflammation and infection

Written by: Saygı Hospital Health Guide Editorial Board
Published:

This content is for general information; please consult your physician for diagnosis and treatment.

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What is Bronchiectasis?

Bronchiectasis is defined as irreversible dilation and distortion of bronchi resulting from destruction of elastic and muscular components of airway walls, typically secondary to chronic inflammation and infection. It may be localized or diffuse, cylindrical, varicose, or cystic (saccular) in morphology.

The vicious cycle hypothesis (Cole) describes a self-perpetuating process: initial airway injury impairs mucociliary clearance, leading to bacterial colonization, persistent neutrophilic inflammation, airway wall damage, and further mucus stagnation. Pseudomonas aeruginosa colonization indicates severe disease and worse prognosis.

Etiologies are numerous: post-infectious (tuberculosis, pertussis, severe pneumonia), genetic (cystic fibrosis, primary ciliary dyskinesia, alpha-1 antitrypsin deficiency), immunodeficiency (CVID), aspiration, autoimmune (rheumatoid arthritis, IBD), ABPA, and traction bronchiectasis from pulmonary fibrosis.

Diagnosis requires clinical features (chronic cough, sputum production, exacerbations) plus characteristic HRCT findings: bronchial wall thickening, airway dilation with bronchoarterial ratio >1.0, lack of tapering, mucus plugging, and tree-in-bud opacities.

Symptoms

Chronic cough with daily sputum production (variable amounts, often purulent)
Recurrent respiratory infections and exacerbations
Hemoptysis (ranges from blood-streaked sputum to massive bleeding)
Dyspnea, wheezing, chest pain, and fatigue
Crackles, wheezes, and rhonchi on auscultation, often localized
Clubbing in advanced disease; rhinosinusitis features may coexist

Risk Factors

Prior severe respiratory infections: tuberculosis, pertussis, measles, ABPA
Genetic disorders: cystic fibrosis, primary ciliary dyskinesia, alpha-1 antitrypsin deficiency
Immunodeficiency: common variable immunodeficiency, secondary immunodeficiency
Aspiration (GERD, neurologic disease, dysphagia)
Autoimmune/connective tissue disease: RA, Sjögren, ulcerative colitis
Structural airway abnormalities: tracheobronchomalacia, Mounier-Kuhn syndrome, Williams-Campbell

When to See a Doctor?

If you experience any of the following symptoms, seek medical attention promptly:

  • Chronic productive cough lasting more than 8 weeks with recurrent infections warrants HRCT evaluation for bronchiectasis.
  • Known bronchiectasis patients with increased cough, sputum volume or purulence, dyspnea, or fever should be assessed for exacerbation and sputum cultures obtained.
  • Significant hemoptysis (>100 mL or compromising airway), severe dyspnea, or hemodynamic instability requires emergency evaluation for massive hemoptysis management.

Treatment Methods

01
Airway clearance techniques: active cycle breathing, autogenic drainage, positive expiratory pressure devices, high-frequency chest wall oscillation; hypertonic saline nebulization.
02
Identify and treat underlying cause: immunoglobulin replacement for CVID, GERD management, itraconazole for ABPA, CFTR modulators for cystic fibrosis.
03
Exacerbation treatment: sputum culture-guided antibiotics (14 days typical), extended courses for Pseudomonas; hospitalization for severe exacerbations.
04
Chronic suppressive therapy: inhaled antibiotics (colistin, tobramycin, aztreonam) for Pseudomonas colonization; long-term macrolides (azithromycin 3x/week) for frequent exacerbations.
05
Management of hemoptysis: bronchial artery embolization for significant or recurrent bleeding; surgical resection for focal disease with refractory complications.
06
Pulmonary rehabilitation, vaccinations (influenza, pneumococcal, pertussis, RSV), smoking cessation, and treatment of comorbidities (asthma, COPD, rhinosinusitis).

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Health Disclaimer: The information on this page is prepared for general informational purposes only. It does not replace medical diagnosis and treatment. Please consult your physician for your complaints. Saygı Hospital does not accept responsibility for actions taken based on the information on this page.