Neuropsychiatric and Cardiovascular Side Effects in Ketamine Analgesic Infusions

Postoperative pain is a world wide problem related with surgery. Multimodal analgesia may include ketamine, aimed to decrease opioid adverse effects in postoperative analgesia for major surgery, and risk of chronic postsurgical pain. Ketamine has shown efficacy as adjuvant in multimodal analgesia, however, neuropsychiatric and cardiovascular effects of ketamine at low doses in continue postoperative infusion are less known. This type of adverse effects may compromise appropriated recovery. Objective to determine frequency of delirium, agitation, sedation, hallucinations, bad dreams and cardiovascular changes associated with ketamine analgesic infusion treatment for postoperative pain.