Changes

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As you can see, each of these machines must be approached very differently in use. They are tools with various modes of operation, different strengths and weaknesses. Lower level machines are factory limited to reduce the amount of useful pressure support. These entry level machines are often only useful for rudimentary control of OSA. Many people having trouble with obtaining not only apnea control but better sleep, often need these Bi-level or Tri-level modes properly applied. They really change therapy quite drastically. In quite a few instances, more levels of pressure support and finer adjustments to match an individuals breathing patterns are needed and so a step up in machine ability is required. You would be advised to quickly figure out if your machine will do what it needs to. Stop torturing yourself if you need to move to a dedicated bi-level machine.