MRCP2-0556

A 63-year-old man with metastatic prostate cancer is admitted with a general decline. He is diagnosed with pneumonia and given IV fluids and antibiotics, but shows limited improvement. The decision is made to focus on symptom control.

To manage his breathlessness and pain related to bone metastases, he is started on a syringe driver of morphine sulphate. However, he develops hiccups and nausea.

What medication would be the most appropriate to add to the syringe driver?