A double-blind, randomised, placebo-controlled trial comparing intrathecal bupivacaine with bupivacaine plus morphine to reduce delirium in patients with hip fractures-Salmon-Mind trial study protocol.

Background: Surgical treatment of proximal femur fractures is complicated by postoperative delirium in about one-third of patients. Pain and opioid consumption are modifiable factors that may influence the incidence of delirium. An intrathecal injection of morphine may lead to a reduction in postoperative pain and reduced systemic opioid consumption.