Geriatrics and Palliative Carecommon
An 81-year-old man is admitted with a fractured neck of femur and becomes inattentive and disorganised over 24 hours. His level of alertness fluctuates, but he has no fever, focal neurological signs or hypoglycaemia; his pain is controlled. Promethazine was commenced for sleep the previous evening, in addition to regular oxycodone, paracetamol and senna. Which one of the following is the most appropriate immediate action?