“…While data analyzing the accuracy of the DDD method are lacking, previous investigators have recognized likely problems such as use in pediatric populations, patients with renal failure, or for prophylactic drug use. [8][9][10] The University of Minnesota Medical Center, Fairview (UMMC) is a dual-campus, 890-bed, quaternary care teaching hospital that serves a variety of patient types of all ages, including critically ill, oncology, cardiology, solid-organ transplant, bone marrow transplant, and medical and surgical patients. A variety of antiinfective control measures are currently in place at UMMC, such as…”