Hi, I am new to the group, but do have obstructive sleep apnea. At first my doctor gave me a C-PAP, and then within about a month and a half, he ordered a 3rd sleep study and then switched me to a Respironics Bi-PAP Auto SV unit. I also have an oxygen bleed into the unit at a rate of 4 liters per minute, as I also have COPD (Emphysema) and lots of other health problems. I was not aware of it, but I literally stop breathing for up to 2 full minutes several times during the night, and the C-PAP… Continue