Sublingual Sufentanil PCA Usability for Postoperative Pain (Zalviso® System)

"The Zalviso device will be provided immediately before the Post anesthesia care unit (PACU) discharge. Patients will be queried every day during three postoperative days for the ability to use the device, their satisfaction, the level of pain, and the incidence of side effects. There will be no changes in usual care.~In the end of this study ward nurses carrying Zalviso patients will be asked to provide their usability and satisfaction evaluation for Zalviso device management. Physical therapist will be asked to provide their satisfaction regarding patients' ability to follow physical therapy program."