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Phlegm (/ ˈ f l ɛ m /; Ancient Greek: φλέγμα, phlégma, "inflammation", "humour caused by heat") is mucus produced by the respiratory system, excluding that produced by the throat nasal passages. It often refers to respiratory mucus expelled by coughing, otherwise known as sputum.
Chest congestion is usually caused by excess mucus in the airways, says Meilan King Han, M.D., M.S., professor of medicine and chief of the Division of Pulmonary and Critical Care at the ...
Meaning, you don’t cough anything up. When to see a doctor for a cough. ... You’re coughing up less mucus. Irritation of the back of your throat and voice changes improve.
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Airway clearance therapy is treatment that uses a number of airway clearance techniques to clear the respiratory airways of mucus and other secretions. [1] Several respiratory diseases cause the normal mucociliary clearance mechanism to become impaired resulting in a build-up of mucus which obstructs breathing, and also affects the cough reflex.
Airway clearance techniques improve difficulty breathing, cough, and help patients cough up phlegm and mucus plugs. [72] Airway clearance usually uses an inhaled agent (hypertonic saline) with chest physiotherapy, such as high-frequency chest wall oscillation. [3] Many airway clearance techniques and devices exist.