<human>: Can you condense the text into a few key points?

A bit of background: My dad is a great guy. I love him very much and we have a good relationship. He is, however, very stubborn and he's the kind of guy who doesn't go to the doctor for anything, he won't take ibuprofen for a headache, and he loves his steak dinners. He walked around with an inguinal hernia for 2 years before "getting around to getting it fixed."

My dad has finally gone to a sleep study and the results showed that he has sleep apnea: he quits breathing for a few seconds several times an hour.

I was so glad that he was taking an interest in his health by doing this study! The results definitely pointed to him getting a CPAP to keep him breathing throughout the night. However... it has been months since the study, and he has not gotten a CPAP machine.

My mom and I have been asking him why he won't get a CPAP machine, and he basically clams up and says its nobody's business. I begged Mom to make him get the machine, and she says that he just tells her to stop nagging him.

Dad always mentions how he wakes up randomly at 3 in the morning and can't get back to sleep but I know if I bring it up, he'll get defensive. Whenever he says, "I don't know why I wake up all the time," I want to scream, "because you aren't breathing!" But I know that will drive him away... and the specialist told him during the study that this is the cause of his poor sleeping patterns. Is this denial of some sort?

I think him getting better sleep will improve his mood and encourage him to exercise more (which he needs as he has *untreated* high blood pressure and hyperlipidemia), not to mention help his overall health. I worry about him! 

Does anyone have experience trying to talk to a family member who gets defensive over medical concerns? How can I reach him? I work in cardiology and see the consequences of ignoring certain health issues everyday :(
<bot>: My dad has bad sleep apnea. He knows it but will not get a CPAP machine. He gets defensive when my mother or I ask about it. How can I approach him in a non-confrontational way?