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J Maxillofac Oral Surg. 2015 Mar;14:32-7. doi: 10.1007/s12663-011-0271-4. Epub 2011 Aug 10.

Trigemino-cardiac reflex during orbital floor reconstruction: a case report and review.

Journal of maxillofacial and oral surgery

Sunil Vasudev, K Sudhakara Reddy

Affiliations

  1. Department of Oral & Maxillofacial Surgery, DAPMRV Dental College & Hospital, JP Nagar 1st Phase, Bangalore, India.
  2. Department of Oral & Maxillofacial Surgery, Sri Rajiv Gandhi College of Dental Sciences, Bangalore, India.

PMID: 25861181 PMCID: PMC4379254 DOI: 10.1007/s12663-011-0271-4

Abstract

Trigemino-cardiac reflex is occurrence of hypotension and bradycardia upon surgical manipulation of areas supplied by the trigeminal nerve, and has been reported during craniofacial maxillofacial and ocular surgeries. Communication between the anaesthetic and surgical team is essential, and cessation of the precipitating stimulus is the first and most important therapeutic step. We report a case of immediate, reproducible, and reflexive response of Bradycardia and dysrhythmia upon manipulation of orbital fracture during orbital floor reconstruction in a 65-year-old man. Upon recognition of the reproducible relationship between falcine stimulation and increased vagal tone, the patient was given atropine in an effort to block cholinergic hyperactivity. After atropine administration, no further dysrhythmias occurred and surgery was carried uneventfully.

Keywords: Bradycardia; Cardiac reflex; Occulo-cardiac reflex; Trigemino-cardiac reflex; Vagal reflex

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