What conditions could lead to a specialist advising that an elective operation is not advisable because the patient should not have GA because it could be dangerous?
Anything going from breathing, to heart problems. GA is always a risk, and sometimes, it is just a case of someone being not strong enough to withstand and recover from it.
My husband was told he couldn't have surgery on a badly damaged shoulder, from a fall. The consultant said he is too frail and doubted he would survive the anesthetic.