opisthotonos


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Related to opisthotonos: Risus sardonicus

opisthotonos

 [o″pis-thot´o-nos]
a form of spasm in which the head and heels are bent backward and the body bowed forward. adj., adj opisthoton´ic.

o·pis·thot·o·nos

, opisthotonus (ō'pis-thot'ō-nŭs),
A tetanic spasm in which the spine and extremities are bent with convexity forward, the body resting on the head and the heels.
[opistho- + G. tonos, tension, stretching]

opisthotonos

/opis·thot·o·nos/ (o″pis-thot´ŏ-nos) a form of extreme hyperextension of the body in which the head and heels are bent backward and the body bowed forward.opisthoton´ic

opisthotonos

[ō′pisthot′ənəs]
Etymology: Gk, opisthios, posterior, tonos, straining
a prolonged severe spasm of the muscles causing the back to arch acutely, the head to bend back on the neck, the heels to bend back on the legs, and the arms and hands to flex rigidly at the joints. It is related to meningitis.
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Opisthotonos

o·pis·thot·o·nos

, opisthotonus (ō'pis-thot'ǒ-nos, -nŭs)
A tetanic spasm in which the spine and limbs are bent with convexity forward, the body resting on the head and the heels.
[opistho- + G. tonos, tension, stretching]
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OPISTHOTONOS
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OPISTHOTONOS

opisthotonos

(o?pis-thot'o-nos) [? + tonos, tension]
A tetanic spasm in which head and heels are bent backward and the body is bowed forward. This type of spasm is seen in strychnine poisoning, tetanus, epilepsy, the convulsions of rabies, and in severe cases of meningitis. In the latter case, the patient's neck is rigid and the head retracted, seeming to press into the pillow.
See: illustration; emprosthotonos; pleurothotonosopisthotonic, adjectiveillustration

opisthotonos

a form of spasm in which the head and tail are bent upward and the abdomen bowed downward. Indicates a lesion in the area of the medulla, pons and midbrain, or a general decrease in synaptic resistance, as in tetanus.
References in periodicals archive ?
Clinical signs consisted of vulvar hemorrhage in the does, epistaxis, ataxia, opisthotonos, diarrhea, ocular discharge, vocalization, and death.
On June 18, she sought treatment for opisthotonos at a local emergency department.
On July 14, 2006, staggering paresis of the hind legs, incoordination, and intermittent opisthotonos developed in a female barbary macaque (Macaca sylvanus).
In the afternoon of the same day, a high fever developed, and seizures began, with extension and struggling of all extremities but without opisthotonos.
The patient demonstrated crossed patellar reflexes and developed multiple, painful, generalized spasms and opisthotonos with even the slightest tactile stimulation.
It is associated with laryngeal and pharyngeal muscle spasms, facial grimacing, opisthotonos, and seizures.