Patients will be randomized to receive either 20 mg/day of fluoxetine (one pill) or placebo (one pill), to be started one week prior to the scheduled hospital admission date. The dose will be increased to two pills per day on day 1 of hospitalization bringing the total dose of fluoxetine to 40 mg/day in patients randomized to receive this medication. On the day of discharge from the hospital, the study medication will be reduced to 1 pill per day and the patient will be instructed to stop the medication one week following discharge. A follow-up clinic visit for the patient will be scheduled 1 month following hospital discharge, as is the usual protocol for patients undergoing VET at our institution.