The Silent Threat of Wooden Chest Syndrome: Prompt Management of Fentanyl-Induced Muscle Rigidity in the Intensive Care Unit. 

The Silent Threat of Wooden Chest Syndrome: Prompt Management of Fentanyl-Induced Muscle Rigidity in the Intensive Care Unit. 

Devarashetty S, Arty F, Vangala A, Shanab AA, Du D. 

Eur J Case Rep Intern Med. 2025 Jun 30;12(8):005363. doi: 10.12890/2025_005363. PMID: 40786549; PMCID: PMC12331262.

https://pmc.ncbi.nlm.nih.gov/articles/PMC12331262/