- Asterixis is the sudden loss of muscle tone during sustained contraction of an outstretched limb.
- it is associated with a silent period on EMG, distinguishing it from myoclonus, and is somteimes referred to as ‘negative myoclonus’.
- liver failure (hepatic flap)
- renal failure/ azotemia
- CO2 narcosis (type 2 respiratory failure)
References and Links
- Talley NJ, O’Connor S. Clinical Examination: A Systematic Guide to Physical Diagnosis. MacLennan and Petty. 3rd edition, 1998.