Good day! I am seeking some advice. Background: I am a 65 year old male with congestive heart failure and an LV ejection fracture of 30%. I also have been diagnosed with both obstructive & central sleep apnea. I have been using a ResMed ASV machine for the last year, but a recall notice says that the ASV technology can cause sudden death in users who have an ejection fracture below 45%. I do not have much confidence in my current sleep doctor and I am trying to understand whether a CPAP or Bi-Pap works better for Central Apnea. Also, is there a best-in-class organization/place where I can speak to experts in this field? Thanks!