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Otherwise Unfavorable Sleep Study

Criteria for unfavorable sleep study:

  • Any AHIo with severe hypoventilation (percent total sleep time (TST) with End-tidal CO2 or transcutaneous) CO2 >50mmHg for >25% of TST or >10mmHg from baseline awake
  • Any AHIo with saturation nadir (with obstructive events) <80%
  • Any AHIo with %TST SpO2 <90% at >2% or 5 minutes
  • Any AHIo with prolonged severe events

These guidelines do not establish a standard of care to be followed in every case. It is recognized that each case is different and those individuals involved in providing health care are expected to use their judgment in determining what is in the best interests of the patient based on the circumstances existing at the time. It is impossible to anticipate all possible situations that may exist and to prepare guidelines for each. Accordingly these guidelines should guide care with the understanding that departures from them may be required at times.