Muhammad Saad Yousuf, Syed Shabbir Ahmed, Khalid Samad.
Cis-atracurium with masseter muscle spasm: an unanticipated difficult endotracheal intubation and temporomandibular joint displacement: a case report.
Pak Armed Forces Med J Jan ;71(4):1501-03.

Masseter muscle spasm and displacement of temporomandibular joint under anaesthesia could be life threatening if an anaesthesiologist is not prepared. We present a case of 23 years old young lady, who otherwise healthy, having symptoms of abdominal pain and vomiting. Initial baseline workup showed a solitary gallstone and was then planned for urgent laparoscopic cholecystectomy. The challenges faced in the perioperative period were the management of unanticipated masseter muscle spasm and difficult endotracheal intubation after administration of cisatracurium, and temporomandibular joint displacement.

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