Bronchiectasis

Causes

• Severe Lung Infections (often the initiating event):
  • Severe pneumonia (especially viral or bacterial infections like adenovirus, influenza, pertussis, or tuberculosis).
  • Complications from measles or whooping cough (pertussis) in childhood.
• Cystic Fibrosis (CF): The most common genetic cause of bronchiectasis in the developed world. CF causes thick, sticky mucus to block airways, leading to chronic infections and damage.
• Alpha-1 Antitrypsin Deficiency: A genetic disorder that can lead to lung damage, including emphysema and bronchiectasis.
• Immune System Deficiencies: Conditions that weaken the immune system, making individuals more prone to recurrent infections (e.g., common variable immunodeficiency (CVID), HIV/AIDS, specific antibody deficiencies).
• Allergic Bronchopulmonary Aspergillosis (ABPA): An allergic reaction to Aspergillus fungus that colonizes the airways, causing severe inflammation and damage.
• Connective Tissue Diseases: Autoimmune disorders like rheumatoid arthritis, Sjögren's syndrome, lupus, or inflammatory bowel disease can cause lung inflammation and lead to bronchiectasis.
• Ciliary Dyskinesia Syndromes (e.g., Primary Ciliary Dyskinesia - PCD): Inherited disorders where the cilia (tiny hair-like structures that clear mucus) don't function properly.
• Gastroesophageal Reflux Disease (GERD): Chronic aspiration of stomach acid into the lungs can cause inflammation and damage.
• Inhaled Foreign Body: A foreign object accidentally inhaled into the airways can cause localized obstruction and recurrent infection.
• Chronic Obstructive Pulmonary Disease (COPD): While distinct, severe COPD can sometimes be accompanied by bronchiectasis, often referred to as "COPD-bronchiectasis overlap syndrome."
• Non-Tuberculous Mycobacterial (NTM) Infections: Certain types of mycobacteria (not causing tuberculosis) can cause chronic lung infections that lead to bronchiectasis.

Symptoms

• Chronic cough: Persistent cough that produces large amounts of sputum (phlegm), often thick and discolored (yellow, green, or even bloody).
• Shortness of breath (dyspnea): Especially during physical activity.
• Wheezing.
• Chest pain or discomfort.
• Recurrent respiratory infections: Frequent bouts of bronchitis or pneumonia.
• Fatigue.
• Weight loss (in severe cases).
• Clubbing of fingers and toes: Enlargement of the fingertips and toes, less common but can occur in severe, long-standing cases.

Diagnosis

• Medical History and Physical Exam: The doctor will ask about your symptoms, history of lung infections, smoking history, and family history. They will listen to your lungs for crackles, rhonchi (rattling sounds), or wheezing.
• High-Resolution Computed Tomography (HRCT) Scan of the Chest: This is the gold standard for diagnosing bronchiectasis. It provides detailed images of the airways, showing the characteristic widening and scarring.
• Sputum Culture: A sample of mucus is tested to identify the specific bacteria or fungi causing recurrent infections, which helps guide antibiotic treatment.
• Pulmonary Function Tests (PFTs): Measure lung function (e.g., spirometry) to assess airflow obstruction and lung volumes.
• Blood Tests: To check for underlying causes such as:
  • Alpha-1 antitrypsin deficiency.
  • Immune deficiencies (immunoglobulin levels).
  • Cystic fibrosis gene mutations.
  • Allergy testing for ABPA.
  • Tests for autoimmune diseases.
• Bronchoscopy: A procedure where a thin, flexible tube with a camera is inserted into the airways to visualize them directly, obtain samples, or remove foreign bodies. This is done if a localized cause is suspected or for difficult-to-diagnose infections.

Treatment

• Airway Clearance Techniques: These are essential to help remove excess mucus from the airways.
  • Chest Physiotherapy (CPT): Manual techniques (clapping, percussion) or mechanical devices (e.g., vibrating vests, oscillatory PEP devices) to loosen and move mucus.
  • Controlled breathing techniques.

• Medications:
  • Antibiotics: To treat acute infections. Long-term (prophylactic) or inhaled antibiotics may be used for frequent infections.
  • Bronchodilators: Inhaled medications that open up the airways (similar to asthma medications) to improve airflow and mucus clearance.
  • Mucolytics: Medications (e.g., hypertonic saline, dornase alfa (for CF-related bronchiectasis)) that thin mucus, making it easier to clear.
  • Anti-inflammatory medications: Inhaled corticosteroids may be used, particularly if there's co-existing asthma or COPD.
  • Corticosteroids (oral): Short courses may be used for severe flare-ups.
  • Specific treatments for underlying causes: (e.g., antifungal medications for ABPA, enzyme replacement for CF, immunoglobulin replacement for immune deficiencies).

• Lifestyle Management:
  • Quit smoking: Essential to prevent further lung damage.
  • Regular exercise: Helps improve lung function and overall health.
  • Hydration: Drinking plenty of fluids can help thin mucus.
  • Vaccinations: Annual flu and pneumococcal vaccines to prevent respiratory infections.

• Oxygen Therapy: May be needed for individuals with low blood oxygen levels.
• Surgery: In rare cases, surgery may be considered to remove a severely damaged portion of the lung (e.g., if damage is localized) or for a lung transplant in very severe, end-stage cases.

Living With Bronchiectasis

Bronchiectasis is managed more than it is cured, and the people who do well are the ones who clear their airways every day, treat flares early with the right antibiotic, and keep a current sputum culture on file.

Airway clearance is the treatment, not an extra

Ten to twenty minutes once or twice daily, increased during a flare, is the routine that keeps mucus from sitting and breeding infection. A handheld oscillating device or a vibrating vest, nebulized hypertonic saline beforehand to thin the sputum, and a session timed before exercise all improve the yield.

Treating a flare with the right drug for the right length

More sputum, darker color, and more breathlessness or fatigue for more than two days is a flare, and a sputum sample is sent before antibiotics start. Courses run about fourteen days and are chosen from the last culture: amoxicillin-clavulanate for the usual organisms, ciprofloxacin when Pseudomonas has grown. A first Pseudomonas isolate is treated aggressively to try to eradicate it, because once established it means more flares and faster decline. Three or more flares a year is the threshold for long-term low-dose azithromycin, which cuts flares substantially; nontuberculous mycobacteria must be ruled out first, since a macrolide alone breeds resistance in them, and hearing and heart rhythm are checked along the way.

What helps less than people expect

Inhaled steroids are reserved for coexisting asthma or COPD, because in bronchiectasis alone they raise pneumonia risk without clear benefit. Cough suppressants keep infected mucus in place. Untreated gastroesophageal reflux and chronic sinusitis feed the airways from below and above and are treated as part of the lung plan. Pulmonary rehabilitation improves exercise tolerance and clearance and is underused.

Florida factors and the shots that prevent flares

Red tide aerosols, Saharan dust, and wildfire smoke each trigger flares here, and our red tide and air quality articles explain when to stay indoors. A nebulizer and clearance device need a power plan for hurricane season, covered in our hurricane medicine cabinet guide. Annual influenza, updated COVID, RSV after 60, whooping cough, and pneumococcal vaccination are the cheapest flare prevention available.

When it is an emergency

Streaks of blood in sputum are common and reported at the next visit; coughing up more than a small amount of blood or blood that keeps coming, sudden severe breathlessness, or high fever with confusion needs emergency care. Our pulmonary team coordinates culture tracking, antibiotic plans, and referral for inhaled antibiotics. The NHLBI and the American Lung Association publish patient guidance on daily management.

If you have bronchiectasis and no written flare plan or sputum culture on file, schedule a visit.