Emphysema

Emphysema is a chronic lung condition where air sacs in the lungs are damaged.

Tiny, balloon-like air sacs in the lungs (called alveoli) deliver oxygen to the blood stream and remove carbon dioxide from the blood.

With emphysema, the inner walls of the alveoli become damaged. This causes them to rupture. Instead of having many small air sacs, the ruptured alveoli create a larger air pocket. This makes it more difficult to exchange oxygen and carbon dioxide, meaning the lungs don’t work as well as they should.

Chronic obstructive pulmonary disease (COPD) is an umbrella term for progressive lung diseases. Emphysema is a type of lung disease that falls within the umbrella of COPD.

Learn more about emphysema, including its causes, symptoms, diagnosis, treatment, and potential risks and complications.

What is emphysema?

Emphysema occurs when the air sacs in the lungs become damaged and lose their elasticity, making it difficult for the lungs to empty air during exhalation. This condition results in trapped air and reduced oxygen exchange, leading to breathing difficulties. Emphysema is a progressive disease, meaning it typically worsens over time.

What causes emphysema?

The main cause of emphysema is smoking.

Emphysema is caused by exposure to airborne irritants. While cigarette smoke is the most common cause, emphysema may also be caused by chemical fumes, vapors, dust, or inhaling smoke from marijuana, vaping, e-cigarettes, or cigars.

Symptoms of emphysema

Emphysema may not always show symptoms in its early stages. Many people do not experience any noticeable symptoms for years. As emphysema destroys more lung tissue, the symptoms become progressively worse.

Symptoms of emphysema include:

• Shortness of breath: Initially occurring during physical activity but progressively present even at rest.
• Wheezing: A high-pitched whistling sound during breathing.
• Chronic cough: Often accompanied by mucus production.
• Chest tightness: A feeling of constriction or heaviness in the chest.
• Frequent respiratory infections: Increased susceptibility to colds, flu, and pneumonia.
• Fatigue: Persistent tiredness due to reduced oxygen levels.
• Weight loss: Unintentional weight loss and muscle wasting.
• Barrel chest: Increased chest size due to lung hyperinflation.

Diagnosis of emphysema

To diagnose emphysema, a health care provider may begin by asking about your symptoms, medical history, and smoking history or exposure to airborne pollution.

Your health care provider may order imagining, lung function, and lab tests to help diagnose emphysema. These tests may include:

• Pulmonary function tests (PFTs):
  • Spirometry: Measures the amount and speed of air exhaled to assess lung function. It is crucial for diagnosing COPD and emphysema.
  • Lung volume measurement: Determines the total volume of air the lungs can hold.
• Imaging studies:
  • Chest X-ray: Identifies characteristic signs of emphysema, such as flattened diaphragm and increased lung volume.
  • CT scan: Provides detailed images of the lungs, showing areas of damage and helping assess the severity of emphysema.
• Blood tests:
  • Alpha-1 antitrypsin levels: Genetic testing for alpha-1 antitrypsin deficiency, especially in patients with no smoking history.
• Oximetry: Measures the oxygen saturation level in the blood to assess how well the lungs are delivering oxygen.
• Bronchoscopy: Allows direct visualization of the airways and may be used to collect samples for further analysis.

Treatment of emphysema

Treatment for emphysema depends on the severity of the condition and how often you experience symptoms.

Quitting smoking

If you smoke, your health care provider can share resources to help you quit. Smoking is the main cause of emphysema, and continuing to smoke can make the condition worse.

Medical Treatments

• Bronchodilators: Medications, such as albuterol and ipratropium, that relax the muscles around the airways and improve airflow.
• Inhaled corticosteroids: Reduce inflammation in the airways and decrease the frequency of exacerbations.
• Antibiotics: Used to treat bacterial infections that can worsen symptoms.
• Phosphodiesterase-4 inhibitors: Medications like roflumilast to reduce inflammation and airway remodeling.

Oxygen Therapy

Oxygen supplementation may be used in advanced cases to maintain adequate oxygen levels and relieve symptoms. Delivered through nasal cannula or mask.

Surgical Treatments

• Lung volume reduction surgery (LVRS): Removes diseased portions of the lung to improve the function of the remaining healthier lung tissue.
• Bullectomy: Removal of large air pockets (bullae) that compress healthy lung tissue.
• Lung transplant: Considered for severe cases where other treatments have failed. This option is primarily for younger patients with end-stage emphysema.

Post-treatment Care

• Regular follow-up: Monitoring lung function, symptom progression, and overall health status to adjust treatment plans.
• Pulmonary rehabilitation: Comprehensive programs including exercise training, education, diet counseling, and emotional support.

Potential risks and complications

Complications of untreated emphysema

• Respiratory failure: Severe lung damage leading to inadequate oxygenation and removal of carbon dioxide.
• Pulmonary hypertension: High blood pressure in the arteries of the lungs, causing strain on the heart.
• Cor pulmonale: Right-sided heart failure due to increased pressure in the pulmonary arteries.
• Frequent infections: Increased risk of respiratory infections, including pneumonia.

Treatment risks

• Medication side effects: Potential adverse effects from bronchodilators and corticosteroids, such as dry mouth, tremors, and increased risk of pneumonia.
• Oxygen therapy complications: Risk of infection or skin irritation from oxygen delivery devices.
• Surgical risks: Infection, bleeding, and other complications related to anesthesia and invasive procedures.

Long-term considerations

• Ongoing monitoring: Regular follow-up with pulmonary function tests, imaging studies, and overall health assessments to manage and adjust treatments.
• Lifestyle management: Continued emphasis on smoking cessation, avoiding pollutants, and maintaining exercise routines.
• Psychological support: Counseling and support for emotional well-being, addressing anxiety, depression, and the psychological impact of living with emphysema.

Impact on quality of life

• Symptom relief: Effective treatment can alleviate symptoms, improve lung function, and enhance overall well-being and quality of life.
• Informed decision-making: Accurate diagnosis aids in making informed decisions about treatment and preventive measures.
• Emotional support: Providing counseling and support to address anxiety, depression, and the psychological impact of living with emphysema or undergoing treatment.

Emphysema is a chronic lung disease that requires early diagnosis and appropriate intervention with lifestyle modifications, medical treatments, and possibly surgical options to manage symptoms and prevent complications. Understanding the causes, symptoms, diagnostic methods, and treatment options is essential for effective management. If you or a loved one are experiencing symptoms or have risk factors for emphysema, consulting with a health care provider, pulmonologist, or respiratory therapist will help determine the need for further evaluation and develop a suitable treatment plan tailored to your specific needs and circumstances.