question: my friend has an irregular heartbeat ranging from 123 to 44 with decending aortic pain and seems to be in a fib, right atrium greater than left, some bruits in left coratid and having periodic left eye partial visual field blindness. I feel that a fib is going to casuse a stroke-he wont go to a dr, his bp is controlled with diet and an occasional lininopril. I just gave him 400 nmg magnesium and a lisinipril