Pattern of hydromorphone use in King Abdulaziz Medical City-Central Region (KAMC-CR).

Hydromorphone is a semi-synthetic opioid that acts mainly on the μ-opioid receptor. Hydromorphone has a fast onset of action, usually within 5 min, and its effectiveness peaks at approximately 20 min, which makes it favourable in the postoperative setting. It plays a role in the management of moderate to severe chronic pain.