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Asterixis (Greek a, not + stērixis, fixed position) is a flapping tremor of the wrist upon extension (dorsiflexion), sometimes said to resemble a "bird flapping its wings". Also called "liver flap", it can be a sign of hepatic encephalopathy (damage to brain cells due to inability of the liver to metabolize ammonia to urea). The exact cause is not known but it is thought to be related to abnormal ammonia metabolism. The International Statistical Classification of Diseases and Related Health Problems (most commonly known by the abbreviation ICD) provides codes to classify diseases and a wide variety of signs, symptoms, abnormal findings, complaints, social circumstances and external causes of injury or disease. ...
The following codes are used with International Statistical Classification of Diseases and Related Health Problems. ...
// R00-R99 - Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R09) Symptoms and signs involving the circulatory and respiratory systems (R00) Abnormalities of heart beat (R000) Tachycardia, unspecified (R001) Bradycardia, unspecified (R002) Palpitations (R008) Other and unspecified abnormalities of heart beat (R01) Cardiac murmurs and other...
The International Statistical Classification of Diseases and Related Health Problems (most commonly known by the abbreviation ICD) provides codes to classify diseases and a wide variety of signs, symptoms, abnormal findings, complaints, social circumstances and external causes of injury or disease. ...
The following is a list of codes for International Statistical Classification of Diseases and Related Health Problems. ...
The Disease Bold textDatabase is a free website that provides information about the relationships between medical conditions, symptoms, and medications. ...
Medical Subject Headings (MeSH) is a huge controlled vocabulary (or metadata system) for the purpose of indexing journal articles and books in the life sciences. ...
Hepatic encephalopathy is a condition (usually caused by liver cirrhosis and its resultant portal hypertension) where brain cells are damaged by a build-up of toxic substances in the blood. ...
In animals the brain, or encephalon (Greek for in the head), is the control center of the central nervous system, responsible for thought. ...
Ammonia is a compound with the formula NH3. ...
A few of the metabolic pathways in a cell. ...
Adams and Foley first described asterixis in 1949 in patients with severe liver failure and encephalopathy.[1] Typically there are brief, arrhythmic interruptions of sustained voluntary muscle contraction causing brief lapses of posture, with a frequency of 3-5 Hz. It is bilateral, but may be asymmetrical. Asterixis is seen most often in drowsy or stuporous patients with metabolic encephalopathies, especially in decompensated cirrhosis or acute hepatic failure. It is also seen in some patients with renal failure and azotemia, and in carbon dioxide toxicity. Asterixis can also be a feature of Wilson's disease. Cirrhosis is a consequence of chronic liver disease characterized by replacement of liver tissue by fibrotic scar tissue as well as regenerative nodules, leading to progressive loss of liver function. ...
Acute liver failure is the appearance of severe complications rapidly after the first signs of liver disease (such as jaundice), and indicates that the liver has sustained severe damage (loss of function of 80-90% of liver cells). ...
Azotemia is a medical condition characterized by abnormal levels of urea, creatinine, various body waste compounds, and other nitrogen-rich compounds in the blood as a result of insufficient filtering of the blood by the kidneys. ...
Wilsons disease or hepatolenticular degeneration is an autosomal recessive hereditary disease, with an incidence of about 1 in 30,000 in most parts of the world and a male preponderance. ...
References
1. Adams RD, Foley JM. The neurological changes in the more common types of severe liver disease. Trans American Neurology Association 1949; 74: 217-219.
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