The Chvostek sign (k) is a clinical sign of existing nerve hyperexcitability (tetany) seen in hypocalcemia. It refers to an abnormal reaction to the stimulation of the facial nerve. When the facial nerve is tapped at the angle of the jaw (i.e. masseter muscle), the facial muscles on the same side of the face will contract momentarily (typically a ...
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http://en.wikipedia.org/wiki/Chvostek_sign
(kvos´tәk) Chvostek-Weiss sign (kvos´tәk vīs´) a spasm of the facial muscles elicited by tapping the facial nerve in the region of the parotid gland; seen in tetany.
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http://www.encyclo.co.uk/local/21001
Type: Term Pronunciation: kvos′tek Definitions: 1. facial irritability in tetany, unilateral spasm of the orbicularis oculi or oris muscle being excited by a slight tap over the facial nerve just anterior to the external auditory meatus. Synonyms: Weiss sign
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http://www.medilexicon.com/medicaldictionary.php?t=81855
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