Coughing up something yellow after a pneumothorax drainage is usually due to a lung infection.
After the occurrence of pneumothorax, the gas will compress the lung tissue, in to a large amount of gas need to perform closed chest drainage, can release the gas on the lung tissue compression.
After closed chest drainage, due to pain and other reasons, patients often dare not cough, sputum is easy to stagnate in the respiratory tract, which may lead to lung infections, once the lung infection, sputum is often manifested as yellow sputum, resulting in coughing up yellow stuff.
After the appearance of yellow phlegm, you need to actively expectorant treatment, such as nebulized inhalation, turn over and pat the back, etc. At the same time, you need to actively anti-infective treatment, such as intravenous infusion of antibiotics, etc., after the infection is under control, the yellow phlegm will slowly reduce until completely disappeared.
Drugs need to be used under the guidance of a doctor, avoid self-medication.