Anesthesia recovery time varies

DEAR DR. GOTT: Why did it take seven hours to recover from my last anesthesia when four other times it was only a couple of hours?
DEAR READER: Recovery depends on the type of anesthesia received, a person’s response to it, the length of time under and what other medications, if any, might have been given. Speak to the doctor who performed the surgery for a more in-depth, personal answer.