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Prolonged drug-induced myoclonus: is it related to palonosetron?
Sook Hui Chaw1, Lucy Chan2, Pui Kuan Lee2
1Department of Anaesthesiology, Faculty of Medicine, University of Malaya, 50603, Kuala Lumpur, Malaysia. sh_chaw@yahoo.com.
Abstract:
We report a case of drug-induced myoclonus possibly related to palonosetron, a second-generation 5-hydroxytryptamine-3 receptor antagonist which was administered as a prophylaxis for postoperative nausea and vomiting in a 28-year-old female. The recurrent episodes of myoclonus jerk involving the head, neck and shoulder persisted for a period of 4 days. The patient also exhibited an episode of severe bradycardia leading to hypotension 7 h after surgery. To our knowledge, this is the first report presenting these adverse events potentially associated with the use of palonosetron.
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