I have been having issues for the past year but docotors have not been able to figure out whats wrong. some times when im sleeping i will wake up out of sleep and my chest area will hurt then all of a sudden I have a hard time breathing almost like I cant breathe at all, that has happened about 5 times or so. But today when i woke up I felt that issue, i got up and a few minutes later My hearing and eyesight started to slowly fade away at the same time, it was really scary I have never had this happen before so im concerned. I layed down and about 5 minutes later my eyesight and hearing came back fully. I have blood pressure problems so i thought that could be the issue but my blood pressure and heart rate where in perfect range. If anyone has any ides on what this could be that would be great. thanks