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Emphysema and Phlegm: Management Tips

Medically reviewed by Mae Charisse Antalan, MD · General Practitioner

Written by Den Alibudbud · Updated Nov 24, 2022

Emphysema and Phlegm: Management Tips

Emphysema is a progressive disease of the lung that is categorized as a form of Chronic Obstructive Pulmonary Disease (COPD). It is a common, preventable, and treatable condition. It presents with persistent respiratory symptoms and limitations on airflow due to alveolar and/or airway aberrations. The disease is typically caused by a significant exposure to noxious gases or particlesBetween genders, men at the age of 50-70 years old are more prone to developing emphysema. The presentation of emphysema may overlap with chronic bronchitis.

Emphysema primarily involves alveolar destruction and airway enlargement. The alveoli are small, fragile sacs with thin walls at the very end of the respiratory tract (in the lower airways, within the lungs).

These air-filled sacs usually cluster together at the end of bronchial tubes within the lungs. The alveoli is the site at which oxygen is delivered into the blood and carbon dioxide is removed from the body. In emphysema, the alveoli may be destroyed, collapsed, narrowed, overinflated, or stretched, causing 2 major pathologic consequences:

  • First, the supporting bronchial tubes to collapse, causing an obstruction in the airway and trapping air within the lungs.
  • Second, due to the reduced number of alveoli, there will be less oxygen available for delivery to the blood. 

Emphysema and phlegm

As emphysema develops, the lungs produce more mucus which the patient will cough out as phlegm. It is important for patients to take note of the color of this phlegm, which may range from clear, white, green, reddish (blood tinged), or yellow. This may imply that the patient has acquired a concomitant respiratory infection such as pneumonia or tuberculosis. It is also necessary to monitor for an increase in phlegm or sputum production.

Patients with emphysema are advised to cough out their phlegm on a tissue in order to observe its color. If changes are present, it is best to seek medical assistance.

Management of cough and phlegm with emphysema

Management goals for the treatment of patients with emphysema should focus on improving quality of life, controlling symptoms, and preventing complications, as lung tissue cannot regenerate or undergo repairs. Treatment options available for patients include the following:

  • Antibiotics (if associated with an infection)
  • Smoking cessation
  • Reducing exposure to environmental pollutants and chemicals
  • Vaccination (such as the influenza vaccine and pneumococcal vaccine)
  • Nutritional support (patients with emphysema are at an increased risk of developing malnutrition)
  • Pulmonary rehabilitation programs (breathing exercises and physical exercise)
  • Oxygen therapy
  • Bronchodilators (may help widen lung airways)
  • Lung transplant
  • Surgical resection of affected lung tissue

Causes of emphysema

The association between emphysema and smoking has been well established, and it is considered the number one risk factor for its development, this is because smoking cigarettes can directly destroy lung tissue and cause irritation of the airways. In doing so, it causes your airway to swell and produce mucus as a defense against the noxious substances entering the lungs.

This leads to the development of shortness of breath and is responsible for the phlegm that patients with this condition may expectorate. There are also other variables that play a role in increasing the risk for the development of emphysema and these are as follows:

  • Environmental factors – refers to the exposure of patients to air pollutants 
  • Genetic factors – conditions such as alpha-1 antitrypsin deficiency can predispose patients to emphysema
  • Respiratory infections – respiratory infections such as your tuberculosis or pneumonia may cause damage to lung tissue

emphysema and phlegm

Symptoms of emphysema

Aside from increased mucus production, those with emphysema may experience:

  • wheezing
  • coughing
  • shortness in breath
  • chest tightness

It is important to not that some of these symptoms may not be evident during the early course of the disease. This is because they typically arise due to significant damage to the lungs.

Early indicators of emphysema include shortness of breath and/or fatigability, even in the absence of physical exertion. However, these symptoms are not unique to emphysema, and so would require further check-up and consultation.

Patients with emphysema may also experience other respiratory conditions, such as chronic bronchitis, pneumonia, tuberculosis, and other infectious lung conditions.

Possible Complications

Patients with this condition, if untreated with no changes in exposure to damaging cigarette smoke and pollutants, may lead to the development of very severe COPD. Emphysema patients are also at risk of developing very dangerous respiratory infections such as tuberculosis and pneumonia.

Key Takeaways

Emphysema is a very serious, yet easily preventable and treatable, chronic inflammatory disease of the respiratory tract. It is a form of chronic obstructive pulmonary disease (COPD) that damages the alveoli of the lungs. This disease may present with symptoms such as obstructed airflow and increased mucus production.

The phlegm in emphysema can be very telling, as its color may indicate the need to seek medical consultation for treatment of a possible respiratory infection. Doctors suggest that patients with emphysema quit smoking, avoid air pollutants and chemicals, and seek out adequate medical care when symptoms emerge.

Learn more about emphysema, here.


Hello Health Group does not provide medical advice, diagnosis or treatment.

Medically reviewed by

Mae Charisse Antalan, MD

General Practitioner

Written by Den Alibudbud · Updated Nov 24, 2022

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