Objective:To evaluate the effect of the 5-HT3-receptor antagonist ondansetron in patients with postcardiotomy delirium. Design: Prospective study. Setting: University hospital. Participants: Thirty-five patients who had undergone coronary artery bypass graft surgery. Interventions: Thirty-five patients 23 men and 12 women who developed delirium in the intensive care unit after coronary artery bypass graft surgery were included. Mean patient age was 51.3 years (range 36 to 79 years). A mental status ...