HEPATIC ENCEPHALOPATHY Flashcards
is the neuropsychiatric manifestation of hepatic failure associated with portal hypertension and the shunting of blood from the portal venous system into the system circulation.
Hepatic Encephalopathy
initially the disease of hepatic encephalopathy was termed as
Subclinical or minimal hepatic encephalopathy
is considered the major etiologic factor in the development of encephalopathy
Ammonia
Ammonia enters the brain and excites what receptors?
Peripheral benzodiazepine-type receptors on astrocyte cells
GABA
Gamma-aminobutyric Acid (GABA) neurotransmission
causes depression of the central nervous system that inhibits neurotransmission and synaptic regulation
Gamma-aminobutyric Acide (GABA) Neurotransmission
The largest source of Ammonia is the
enzymatic and bacterial digestion of dietary and blood proteins in the GI tract
reduces the number of intestinal bacteria capable of converting urea to ammonia.
Antibiotic like neomycin sulfate
are toxic metabolites of sulfur-containing compounds that excreted by the liver under normal conditions.
Mercaptans
earliest symptoms of hepatic encephalopathy include
mental status changes and motor disturbances
an involuntary flapping of the hands may be seen in stage II encephalopathy
Asterixis
Inability to reproduce a simple figure in two or three dimensions is referred to as
construction apraxia
a sweet, slightly fecal odors to the breath that is presumed to be of intestinal origin, may be noticed.
Fetor Hepaticus
is given to reduce serum Ammonia levels.
Lactulose
this indicates that lactulose is performing as intended.
Two or three soft stools
lactulose can diluted wtih
fruit juice
possible side effects of lactulose include
intestinal bloating and cramps, which usually disappear within a week.
normal level of consciousness with period of lethargy and euphoria
Stage I
Increased drowsiness; disorientation; inappropriate behavior
Stage II
Stuporous; difficult to rouse; sleeps most of time
Stage III
Comatose; may not respond to painful stimuli
Stage IV