Objective: To compare the effects of propofol and ketamine on systemic and pulmonary circulations in pediatric patients scheduled for elective cardiac catheterization. Design: Prospective randomized and blinded. Setting: University hospital. Participants: Children (n = 41) undergoing cardiac catheterization. Interventions: All children were premedicated with oral midazolam 60 minutes before the procedure. Patients were separated into 3 groups according to shunts diagnosed by transthoracic ...