Patients: During long-term oxygen therapy, is it important for patients to return to the hospital for regular follow-ups? Prof. Shen Ning: It is best for patients to have regular follow-up visits, based on several purposes. First of all, many patients with long-term oxygen therapy are often very burdened with their minds, during the follow-up, doctors can understand the patient’s concerns and relieve the patient’s psychological pressure; secondly, sometimes incorrect oxygen therapy can cause some adverse consequences, during the follow-up, doctors can find and solve the patient’s problems in the process of oxygen therapy; again, regular follow-up can understand the patient’s condition after oxygen therapy, observe whether the peripheral oxygen saturation Whether the peripheral oxygen saturation reaches above 90% and the arterial oxygen saturation reaches above 60%, which is the bottom line of normal physiological needs. Patients: There are some simple oxygen saturation monitors available in stores now, is it necessary for patients to buy a monitor to monitor oxygen saturation like blood pressure? Prof. Shen Ning: It is definitely not necessary to monitor oxygen saturation like blood pressure. When doctors prescribe long-term oxygen therapy for patients with chronic obstructive pulmonary disease, they usually make a long-term oxygen therapy plan for the patient, and whether the oxygen saturation is monitored daily or not does not affect the long-term oxygen therapy. Therefore, it is definitely beneficial for patients who have the conditions to know the oxygen saturation level by themselves at home with simple equipment to ensure the oxygen requirements; however, it does not matter at all if they do not have such conditions.