There are problems in the Sleep Medicine Field wrt to Diagnostic Standards and Treatment Criteria.
Simply put, AHI is a crude and inaccurate a measurement tool. Plus, patients can have a deceptively low overall AHI and yet still have a very high AHI during REM sleep, even to the point of being unable to sustain REM sleep, which can have devastating cognitive impact over the long term.
Even the criteria for determining the number of apneas is problematic. Most insurers require that an apnea last 10 seconds or more, but that standard was developed in men. Women and children will often have shorter duration apneas, and hence their apneas may be undercounted.
Similarly, some insurers/labs require a 4% O2 desaturation rate, while others will accept 3%. Many fewer people will be determined to be positive for Sleep Apnea at the 4% desaturation requirement, notwithstanding that they are still having many respiratory arousals. And again, women and children may be under-diagnosed because they tend to desaturate less.
These are important policy issues because they determine whether insurance will pay for testing an treatment and financial considerations can often be a major hurdle to achieving treatment.
Better, clinically outcome oriented criteria, are urgently needed. Accordingly, there are studies underway to measure the cardiac impact of apneas and determine whether better diagnostic and treatment criteria can be developed based on those measurements.
Have you run into problems related to diagnostic criteria or standards in being diagnosed or treated?
If so, were you able to work around it and achieve successful treatment?