• Medical hypotheses · Feb 2010

    A new hypothesis of cause of syncope: trigeminocardiac reflex during extraction of teeth.

    • Gururaj Arakeri and Veena Arali.
    • 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
    • Med. Hypotheses. 2010 Feb 1; 74 (2): 248-51.

    AbstractTransient 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.

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