It is beneficial for the elderly to take oxygen, which can improve the oxygen supply to various organs and is beneficial to body regulation, especially for the elderly with Alzheimer's disease and respiratory diseases. The best time to take oxygen is before going to bed at night, which can prevent some ischemic and hypoxic diseases, such as cerebral infarction and myocardial infarction, in the evening and early morning. The oxygen concentration should not be too high, 2-3 liters per minute, and the time is about 2 hours. You can't take oxygen for a long time, which will lead to dependence.
How much oxygen concentration is suitable for the elderly depends mainly on what kind of diseases the elderly suffer from. For example, the patient is mainly hypoxemia at present, so this is a type of respiratory failure. For this kind of old people, generally speaking, low-flow oxygen supply is given, that is, the oxygen concentration should be less than 32.
If the patient currently belongs to type II respiratory failure, a large flow of oxygen should be given, and the oxygen concentration should be greater than 32. Some patients, such as acute left heart failure, should also be given large flow of oxygen at this time. If the patient is only slightly dyspnea or very nervous at present, low-flow oxygen can be given at this time, that is, the oxygen cylinder scale should not exceed three.