passages.id: 21607
passages.type: title
passages.text: Post-operative rigidity after fentanyl administration.
passages.id: 21608
passages.type: abstract
passages.text: A case of thoraco-abdominal rigidity leading to respiratory failure is described in the post-operative period in an elderly patient who received a moderate dose of fentanyl. This was successfully reversed by naloxone. The mechanisms possibly implicated in this accident are discussed.