asterixis /as·ter·ix·is/ (as″ter-ik´sis) a motor disturbance marked by intermittent lapses of an assumed posture as a result of intermittency of sustained contraction of groups of muscles; called liver flap because of its occurrence in hepatic coma, but observed also in other conditions.
asterixis
asterixis
as·ter·ix·is ( s t -r k ss)n. An abnormal tremor consisting of involuntary jerking movements, especially in the hands, frequently occurring with impending hepatic coma and other forms of metabolic encephalopathy. Also called flapping tremor. |
asterixis
[as′tərik′sis]
Etymology: Gk, a, sterixis, not fixed position
a hand-flapping tremor, often accompanying metabolic disorders. The tremor is usually induced by extending the arm and dorsiflexing the wrist. Asterixis is seen frequently in hepatic encephalopathy. Also called flapping tremor, liver flap.
asterixis
Flapping tremor Neurology An exaggerated muscle tremor characterized by involuntary jerking of the hand in flexion and extension, classically seen in advanced liver disease and hepatic encephalopathy
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