American Sleep Association › Forums › Technologists-gc38 › Setup/Collection/Recording-gc25 › Split Night studies – why is there so much controversy?-gctid131 › Reply To: Split Night studies – why is there so much controversy?-gctid341
I think there are lots of different protocols because in some areas of the country insurance is mandating split studies–primarily managed care. The AASM recommendation is to have an index of 40 for splitting and that is what we use. The exception for us is if the patient has previously been diagnosed and is return for re-evaluation (say after UPPP), then we split at 20. Medicare just mandates a minimum of 120 minutes of sleep to diagnose sleep apnea–they don’t really say you should split after 120 minutes of sleep…….just that you can’t split before that.