A comatose patient who is bedridden and prone to developing pneumonic pneumonia will have a large amount of sputum production that needs to be expelled. A tracheotomy is recommended for comatose patients with severe intrapulmonary infections to facilitate sputum aspiration. Because the air is dry, continuous sputum dilution is recommended, and patients are given nebulized inhalation to dilute sputum and facilitate its expulsion. Patients can be given mechanical aids for sputum excretion to facilitate sputum expulsion. Manual aspiration is used to remove the patient’s sputum with an aspirator. Comatose patients, because of the weakened active reflex, can easily form sputum that is difficult to be expelled, therefore, active sputum dilution, turning and tapping the back, mechanical assisted sputum excretion, and using a suction machine to suck out the sputum.