Oculocardiac reflex induced by zygomatic arch fracture in a crossbreed dog.
A 3-year-old crossbreed male dog was presented with a history of blunt facial trauma. Skull radiographs showed right zygomatic arch fracture. An electrocardiogram revealed bradycardia, first-degree atrioventricular block and QT prolongation. Standard biochemical profile including electrolytes was normal. Atropine response test (0.04 mg/kg intravenously) restored normal sinus rhythm at a rate of 140 bpm with normal QT and PR intervals. This observation is consistent with oculocardiac reflex secondary to zygomatic arch fracture.
Selk Ghaffari
Masoud
M
Department of Clinical Studies, School of Veterinary Medicine, Islamic Azad University, Karaj Branch, Karaj, Iran. selkghaffari@gmail.com
Marjani
Mehdi
M
Masoudifard
Majid
M
D000818:Animals; D001285:Atropine / Q000627:therapeutic use; D001919:Bradycardia / Q000188:drug therapy; D004283:Dog Diseases / Q000209:etiology*; D004285:Dogs; D008297:Male; D012024:Reflex, Oculocardiac / Q000502:physiology*; D013203:Staphylococcal Infections / Q000150:complications / Q000662:veterinary; D015051:Zygomatic Fractures / Q000150:complications / Q000601:surgery / Q000662:veterinary*
D001285:Atropine