My husband aged 74 had triple heart by pass surgery 11 weeks ago.  Everything went well and he is recovering remarkably well with just a bit of dizziness when standing up quickly.  This has been alleviated by adjustment of his medication. He is pretty fit and active again, but today after dinner he became very breathless which was quite distressing for him and he said his chest felt empty. This is the only time it has occurred.  Is this a normal post-op sympton or could it be a sign of something more serious?
The dizziness you told is due to a condition called or tho static hypotension, it is due to some antihypertensive or rarely anti-anginal medication and dose titrated and some changes like to change position slowly should help.  Now post bypass decade of Chat Doctor.  However, importantly if the same symptoms occur again and increases when he does some work.  Please consult your cardiologist, Regards