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risus sardonicus
Note: This page may contain terms or definitions that are offensive or inappropriate for some readers.risus sardonicus (ˈriːsəs sɑːˈdɒnɪkəs) n (Pathology) pathol fixed contraction of the facial muscles resulting in a peculiar distorted grin, caused esp by tetanus. Also called: trismus cynicus [C17: New Latin, literally: sardonic laugh]
risus sardonicus
Note: This page may contain terms or definitions that are offensive or inappropriate for some readers.risus [ri´sus] (L.) laughter.risus sardo´nicus a grinning expression produced by spasm of the facial muscles; seen in tetanus and certain types of poisoning.ri·sus ca·ni·nus (rī'sŭs kā-nī'nŭs), the semblance of a grin caused by facial spasm, seen especially in tetanus but also in some kinds of poisoning. Synonym(s): canine spasm, risus sardonicus, sardonic grin, trismus sardonicus [L. risus, laugh + caninus, doglike] A fixed ‘sarcastic’ grimace and anxious expression with drawing up of the eyebrows and corners of the mouth due to spasms of the masseter and other facial muscles, accompanied by rigidity of neck and trunk muscles and arching of back; the RS is seen in generalised tetanus, and caused by a neurotoxin produced by Clostridium tetani, a soil contaminant with a 7–10 day incubation
Prognosis Up to 90% mortality in the unvaccinated and/or susceptible population—e.g., narcotic addictsrisus sardonicus A fixed 'sarcastic' grimace and anxious expression with drawing up of the eyebrows and corners of the mouth due to spasms of the masseter and other facial muscles, accompanied by rigidity of neck and trunk muscles and arching of back; the RS is seen in generalized tetanus, and caused by a neurotoxin produced by.Clostridium tetani, a soil contaminant with a 7-10 day incubation Prognosis Up to 90% mortality in the unvaccinated/susceptible–eg, narcotic addictsrisus sardonicus A characteristic facial expression, as of a sardonic grin, caused by spasm of the muscles of the forehead and the corners of the mouth in acute TETANUS. |