“…In addition, recent, current, or chronic use of any of the following medications and substances increases the likelihood of an adverse outcome in any patient during the perioperative period, including corticosteroids, opioids, insulin, anticoagulants, proton pump inhibitors, cancer chemotherapy, immunomodulators, ethanol, tobacco, and illicit substances [ 20 ]. Institutions have implemented DTP-related process and practice changes at key times in the admission process, that is, six to eight weeks preoperatively (prehospital) to detect and manage anemia, hyperglycemia, and smoking [ 21 ], in the preadmission clinic [ 22 , 23 , 24 ], on admission during medication reconciliation [ 25 , 26 , 27 , 28 ], throughout hospital stay [ 29 , 30 ], and at discharge [ 31 , 32 ]. In addition, theater and ward-based activities to rationalize drug therapy [ 33 , 34 ] include identifying and avoiding or minimizing the use of potentially inappropriate medications for at-risk patient populations: (1) the American Geriatric Society’s (AGS) Beers list for older adults [ 35 ]; and (2) the KIDs list for children created by the Pediatric Pharmacy Association (PPA) [ 36 ].…”