I agree wtih Wisewoman........the anesthesia that is used to put one to sleep is a poison....it takes 72 hours for it to clear from bloodstream....at the earliest....it takes much longer than that to get over the effects of being under general anesthesia. Depression can come after having had surgery and/or a diagnosis as she has. Talk to the cardiologist, yourself, before you go for the appointment. Believe me, he'll appreciate a "heads up" so that he can help her. Best to you and your family. Pat