Is there a requirement for the concentration of oxygen inhaled by patients with cor pulmonale?

Pulmonary heart disease needs long-term low-flow oxygen inhalation. The demand for oxygen concentration is still relatively high. The international standard is 82%, so medical grade oxygen generator is needed. Song Xin brand oxygen generator can be started continuously for 24 hours, and the oxygen concentration is stable. You can read the instructions. The oxygen generator is not an oxygen generator, so the first flow rate is not enough for patients. The second concentration is not enough. There are two reasons for oxygen poisoning. One reason is that due to the high oxygen pressure, carbon dioxide cannot be discharged in time. The other is that due to the high concentration of inhaled oxygen, hemoglobin in the blood is oxidized into hyperoxia hemoglobin, which loses its oxygen-carrying ability and leads to tissue hypoxia. To talk about the problem of oxygen poisoning, we must start with the flow rate of oxygen. Generally, the flow rate of an oxygen generator is 0.5 3L/ min, which means that 0.5 3L of oxygen is generated in one minute. While the gas inhaled by a person in one breath is about 1L- 1.5L, and he breathes about 16 -20 times per minute. Judging from this set of figures, the oxygen produced by the oxygen generator is far from enough for us to breathe, so even if we take oxygen, the gas obtained from the oxygen generator is a small part, mostly air, so the oxygen concentration that really reaches the lungs is far from 93%, and the oxygen generator produces atmospheric oxygen, not hyperbaric oxygen, so under normal circumstances, there will be no oxygen poisoning when using the home oxygen generator. But this is not absolute. For some people with poor lung function, the discharge of carbon dioxide in the lungs will also be affected under the condition of large oxygen inhalation flow. Therefore, some patients with lung diseases need long-term low-flow oxygen inhalation to reduce the retention of carbon dioxide. If necessary, they can cooperate with a two-stage ventilator to help them expel carbon dioxide from their lungs.