title: A new hypothesis of cause of syncope: trigeminocardiac reflex during extraction of teeth.
abstract: Transient Loss Of Consciousness (TLOC) or vasovagal syncope is well known phenomenon in dental/maxillofacial surgery. Despite considerable study of vasovagal syncope, its pathophysiology remains to be fully elucidated. After having encountered a case of trigeminocardiac reflex after extraction of maxillary first molar we observed and studied 400 extractions under local anesthesia to know the relation between trigeminocardiac reflex and syncope. We make hypothesis that trigeminocardiac reflex which is usually seen under general anesthesia when all sympathetic reflexes are blunted can also occur under local anesthesia during extractions of maxillary molars (dento-cardiac reflex) and mediate syncope.
authors.affiliation: Department of Oral Maxillofacial and Reconstructive Surgery, Sri Sai College of Dental Surgery, Vikarabad and Cranio-Maxillofacial Unit, FMS Dental Hospital, Andhra Pradesh, India. gururaj.arakeri@gmail.com
authors.forename: Gururaj
authors.initials: G
authors.lastname: Arakeri
authors.forename: Veena
authors.initials: V
authors.lastname: Arali
mesh_terms: D005260:Female; D006321:Heart / Q000503:physiopathology*; D006801:Humans; D015994:Incidence; D007194:India / Q000453:epidemiology; D008297:Male; D012018:Reflex; D013575:Syncope / Q000453:epidemiology* / Q000503:physiopathology*; D014081:Tooth Extraction / Q000706:statistics & numerical data*; D014276:Trigeminal Nerve / Q000503:physiopathology*