I do use a CPAP machine, and have been advised that this (Sleep Apnea) and my diagnosis of Cardiomyopathy and history of severe Right and Left Heart
Failure make me a very high risk for stroke
(even without the added diagnosis of ASA). I have requested a TEE from my cardiologist at Kaiser (Walnut Creek, CA), but his only response to my request has been that I just need to start on aspirin q.d. to prophalactically avoid a possible CVA (stroke-Cardiovascular Incident).