A 72-year-old woman in hospital after hip fracture surgery becomes acutely confused, disoriented and agitated overnight. She has a urinary catheter and is on opioids. Which of the following is the most appropriate initial management?AStart high-dose antipsychotics immediatelyBAssess for and treat underlying causes (pain, infection, medications, urinary retention), optimise environment and use non-pharmacologic measuresCRestrain the patient and reduce all monitoringDIncrease opioid dose to settle agitationEDischarge her to long-term care immediatelyCheck my answer