Pre/Post Procedure Registered Nurse (Per Diem). Gastro Surgi Center is seeking a reliable PerDiem. Pre/Post Procedure Nurse. to join our team. This position is specifically for. Mondays and Tuesdays. with. flexible 8- or 10-hour shifts. . Please read all requirements carefully before applying. Apply ONLY if you meet and agree to ALL items below. Requirements (No Exceptions). Availability. You must be willing and able to work. both Monday AND Tues...