I haven't had time to read the entire thread, so I apologize if this is repetitive. DS#4 was awakened in the middle of his sleep study because of severe sleep apnea. They put him on the CPAP and tried two masks; the larger face mask and the nose mask. He said that he wasn't able to tolerate either. Complaints ranged from uncomfortable to claustrophobic. What are the alternatives? Has anyone here had the surgery? Thanks.