I had a sleep study test done and was told I had an apnea/hypopnea index of 6.6, which is just considered mild as they say the cutoff is 5. My PCP has has now ordered another study with CPAP. My question is would the fact that I sometimes have difficulty breathing through my nose have any impact on that AHI and maybe this study with CPAP would not be necessary? I'm having these done because of anxiety that they say can be caused by sleep apnea and they want to be sure before prescring psy. med. and I've complained that no matter how much I sleep, never feel rested, and I work midnight shift so my sleep is fragmented anyhow. Thank you.