cpap vs bipap

My husband is being tested next week and in meeting with the doctor today first, he was considering possibly using bipap instead of cpap. He said the tests would tell him. My husband has a dissected aorta (not surgically repairable) and the last 4 years has been on a lot of meds because of this. Dr. said he is concerned that it may not be sleep apnea, but med related, even tho I told him he has snored like a train and nightly has times when he will stop breathing, and the usual, always tired- all 36 years we've been married. Dr. said if it was just from meds or was a combination of meds and sleep apnea, that the bipap would be better for him. We don't know much about these machines - I just got a cpap for myself 2 weeks ago. It's very hard to ask this doctor questions because he's hard to understand. I read with bipap they could turn the air up more for intake and then lesser on the expiratory. Couldn't this also be accomplished on the Remstar Auto M series with c-flex like I have?
Any help would be appreciated.

kennasgrammy wrote:My husband is being tested next week and in meeting with the doctor today first, he was considering possibly using bipap instead of cpap. He said the tests would tell him. My husband has a dissected aorta (not surgically repairable) and the last 4 years has been on a lot of meds because of this. Dr. said he is concerned that it may not be sleep apnea, but med related, even tho I told him he has snored like a train and nightly has times when he will stop breathing, and the usual, always tired- all 36 years we've been married. Dr. said if it was just from meds or was a combination of meds and sleep apnea, that the bipap would be better for him. We don't know much about these machines - I just got a cpap for myself 2 weeks ago. It's very hard to ask this doctor questions because he's hard to understand. I read with bipap they could turn the air up more for intake and then lesser on the expiratory. Couldn't this also be accomplished on the Remstar Auto M series with c-flex like I have?
Any help would be appreciated.

The BiPAP can have a larger difference in pressure between inhale and exhale than the C-flex can provide. Also if he is having central apneas instead of obstructive he may need a machine that has a minimum timed breath (don't remember the technical term) to encourage the breathing along. You can get that feature in a BiPAP but not in any regular CPAP or APAP.