Respiratory Symptoms. Zhao Li, M.D. Common symptoms. Cough Expectoration Hemoptysis Chest pain Cyanosis Dyspnea. Cough ( a protective reflex ): causes. Respiratory diseases___ the most common causes Airway agents
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Zhao Li, M.D.
middle: mucoid or mucopus,
lower: necrosis substance
Grey or black
____obstruction in large airway
____obstruction in small airway or alveolar elasticity decreased
____deficient gas exchange