Just two days ago, my family went to the hospital for examination. The process is roughly as follows: generally, when you go to the hospital for this multi-channel examination, you will be monitored on the first night, and many wires will be tied to let you sleep. The cost will be around 1000, and then a diagnosis report will be issued. I will give you a pressure titration the next night, that is, I will sleep on a ventilator for one night, and I can also give a report the next day. The cost is 300 yuan to 400 yuan.
However, it was only after we finished the examination that the doctor suggested using a ventilator. I checked online and found that some regular medical device companies can also provide monitoring and pressure titration for free. You can search it.