opisthotonus


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Related to opisthotonus: oculogyric crisis

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]

opisthotonus

Neurology A type of spasm in which the head and heels arch backward in extreme hyperextension and the body forms a reverse bow; opisthotonus may be seen in scorpion stings, due to cholinergic hyperstimulation by venom.

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]

opisthotonus

Spasmodic, powerful contractions of the back and rear neck muscles causing the body to arch backwards so that the heels approximate to the head. This is a feature of TETANUS, severe MENINGITIS, strychnine poisoning and some brainstem disorders.
References in periodicals archive ?
Observable adverse effects (eg, apnea, cyanosis, arrhythmia, diarrhea, regurgitation, and opisthotonus) were noted.
(1-6) This SLP ranges from involuntary movements, increased tone with twitching and rhythmic movements, opisthotonus to focal motor seizures, generalized tonic-clonic seizures.
The presentation is diverse: generalized tonic-clonic seizures, focal motor seizures, increased tone, opisthotonus and involuntary movements like myoclonus.
However, opisthotonus was observed in two animals in the EMU group after the infusion ceased, lasting approximately 10 minutes.
Transient signs of neurologic excitement during or after propofol administration have been reported, including opisthotonus (TSAI et al., 2007).
The clinical course was characterized by depression, mild diarrhea, torticollis, opisthotonus, paralysis, and trembling.
All animals displayed neurologic disorders characterized by the inability to maintain buoyancy and by opisthotonus, tremors, and seizures (Figure 1, panel A).
Later that day, the patient developed opisthotonus, a high-pitched cry, and poor suckling and later developed athetoid cerebral palsy, hearing loss, and gaze paresis.
There was no opisthotonus. On physical examination, there was a wound with diameter 2x3 cm on the left sole with no discharge.
However, 3 swans exhibited severe neurologic disorders, including opisthotonus, torticollis, and ataxia.
The birds in that incident exhibited clinical signs of muscle tremors, opisthotonus and seizures.
In our experiments, WN virus infection of young domestic geese (Anser anser domesticus) caused depression, weight loss, torticollis, opisthotonus, and death with accompanying encephalitis and myocarditis.