My 62 year old mother had a heart attack requiring by-pass surgery and valve replacement.  She was in good physical shape except for r. arthritis and hypothyroidism for which she was on meds for.   She did not make it out of surgery.  Any reasons her arthritis/hypothyroidism had anything to do with it?
Howell come to ChatDoctorThank for choosing to ChatDoctorI had gone through the history given here, if both the condition are well under controlled then she can be taken for surgery, but the latest test and the physical examination would give the final result whether the patient is physically fit or not, else it is nothing to worry if she is having thyroid dysfunction and arthritis, hope this information helps.