What is myoclonic myoclonus?

What is myoclonic myoclonus?

Myoclonus is a movement disorder, which presents itself with sudden, brief, shock-like jerks. Most myoclonic jerks are due to a brief burst of muscular activity, resulting in positive myoclonus [ Shibasaki and Hallett, 2005 ].

What causes myoclonus in critical patients?

Myoclonus is a frequent involuntary movement in critically ill patients triggered or aggravated by several different drugs or by metabolic or hypoxia-related brain dysfunction [53]. Encephalopathy and delirium are very prevalent in critical care [54], and the reviewed sample has a significant proportion of hospitalized and critical patients.

What is the pathophysiology of cortical myoclonic jerks?

Cortical myoclonic jerks are stimulus sensitive, typically to touch, but sensitivity to visual stimuli is also described [ Shibasaki and Neshige, 1987 ]. Most patients with cortical myoclonus have both positive myoclonus and NM, occurring either independently or together as a complex of the two kinds of myoclonus [ Shibasaki and Hallett, 2005 ].

What is positive and negative myoclonus?

Definition Myoclonus is a movement disorder, which presents itself with sudden, brief, shock-like jerks. Most myoclonic jerks are due to a brief burst of muscular activity, resulting in positive myoclonus [Shibasaki and Hallett, 2005]. When jerks result from brief cessation of ongoing muscular activity, they are called negative myoclonus (NM).

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