Patient: Description of the condition (onset time, main symptoms, hospital visited, etc.): The patient is 90 years old with cerebral atrophy, cerebral infarction for seven or eight years, has been coughing with phlegm, unable to take care of himself, choking and coughing on feedings. In the past six months, he had repeated high fever and went to the county hospital for medical treatment, and at first he used cefoperazone sulbactam sodium, and later he used meloxicillin sodium. For elderly people with cerebrovascular disease who are bedridden for a long time, the most important thing to control infection is to drain the sputum in addition to using effective antibiotics. If the patient does not cough up sputum, the treatment is often ineffective. In addition, if eating often chokes and coughs, it is easy to repeatedly and mistakenly aggravate the infection, and it is recommended to give nasal feeding to supplement nutrition under the nasal feeding tube.