title: Oculocardiac Reflex as a Result of Intraorbital Trauma.
abstract: BACKGROUND
  The oculocardiac reflex is a decrease in heart rate caused by ocular compression or traction upon the extraocular musculature. Multiple instances of this phenomenon have been described in anesthesia, trauma, craniofacial, and ophthalmology literature, but there is a sparsity of documentation in the emergency medicine literature.
  
  
  METHODS
  We describe the observation and management of the oculocardiac reflex in a 26-year-old man with retrobulbar hematoma and intraocular trauma caused by a self-inflicted gunshot wound. WHY SHOULD AN EMERGENCY PHYSICIAN BE AWARE OF THIS?: Prompt recognition of the oculocardiac reflex is important for the emergency physician given the common occurrence of craniofacial trauma and the potentially devastating consequences if not recognized and addressed.
authors.affiliation: Department of Emergency Medicine, University of Mississippi Medical Center, Jackson, Mississippi.
authors.forename: Joel M
authors.initials: JM
authors.lastname: Fahling
authors.affiliation: Department of Emergency Medicine, University of Mississippi Medical Center, Jackson, Mississippi.
authors.forename: L Kendall
authors.initials: LK
authors.lastname: McKenzie
mesh_terms: D000328:Adult; D001919:Bradycardia / Q000209:etiology; D004636:Emergency Service, Hospital / Q000458:organization & administration; D005123:Eye / Q000294:innervation / Q000503:physiopathology*; D006801:Humans; D008297:Male; D008337:Mandibular Fractures / Q000209:etiology; D009900:Optic Nerve / Q000473:pathology; D009917:Orbital Fractures / Q000209:etiology; D012024:Reflex, Oculocardiac / Q000502:physiology*; D019315:Retrobulbar Hemorrhage / Q000209:etiology / Q000601:surgery; D013406:Suicide, Attempted; D014057:Tomography, X-Ray Computed / Q000379:methods; D014947:Wounds and Injuries / Q000150:complications* / Q000601:surgery; D014948:Wounds, Gunshot / Q000150:complications* / Q000601:surgery
keywords: Aschner phenomenon; cantholysis; facial trauma; lateral canthotomy; oculocardiac reflex