Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
41 Cards in this Set
- Front
- Back
Metabolic Functions of the Liver. Sugars stored as ______ converted to______ used to make_____
|
glycogen, glucose, fats
|
|
Metabolic Functions of the Liver. Proteins synthesized from__________; ammonia made into _____
|
amino acids, urea
|
|
Metabolic Functions of the Liver. Fats _______for energy, synthesized, packaged into_______
|
oxidized, lipoproteins
|
|
Drug and hormone metabolism-liver. Biotransformation into _______-_______ or does what to them?
|
water-soluble forms, Detoxification or inactivation
|
|
Liver Failure Can Lead To …JVHA
|
Jaundice, varices, hepatic encephalopathy, ascites
|
|
Jaundice (icterus) a yellow or greenish pigmentation of the skin caused by _________
|
hyperbilirubinemia (serum levels > 2.5-3.5mg/dl)
|
|
obstructive intrahepatic jaundice- Bilirubin conjugated by hepatocytes cannot flow into the ________, conjugated and unconjugated bilirubin accumulates in the ______ and enters the ______
|
duodenum, liver, bloodstream
|
|
Varices – distended tortuous collateral veins primarily in lower ______, stomach, or rectum and is the most common cause of ____ bleeding.
|
Esophagus, UGI
|
|
Hepatic encephalopathy pathophysiology
|
a combination of biochemical alterations that affect neurotrans. Liver dysfunction and vessels which permits toxins to circulate freely to the brain. Most toxic substance is end products of intestinal protein digestion esp. ammonia.
|
|
Dx of hepatic encephalopathy is
|
hx of liver disease, S&S and EEG and Blood chem
|
|
S&S of early hepatic encephalopathy include subtle _______ changes, memory loss, irritability, lethargy, sleep disturbances.
|
Personality
|
|
S&S of late hepatic encephalopathy include
|
confusion, coma, convulsions and asterixis
|
|
tx for hepatic encephalopathy is 1st to correct what? Then restrict dietary protein intake and elim intestinal bacteria.
|
Fluid and electrolyte imbalances and w/e of depressant Drugs that are metabolized by the liver.
|
|
Hepatic encephalopathy may develop [rapidly or slowly?] during acute fulminant hep or [rapidly or slowly?] during chronic liver disease and the development of portal hypertension.
|
Rapidly, slowly
|
|
Asterixis (flapping tremor), confusion, coma, convulsions are S&S of a) Hepatomegaly b) Splenomegaly c)jaundice d) hepatic encephalopathy
|
d) hepatic encephalopathy
|
|
Ascites is the Accumulation of fluid in the _______ cavity, the Body fluid trapped in the ___________and cannot escape which Reduces the amount of fluid available for normal physiologic functions.
|
Peritoneal, third space”
|
|
Cirrhosis most common cause of _______and Results from decreased_______ and ________-____________ pressure.
|
Ascites, albumin, capillary oncotic
|
|
other causes of ascites are malnutrition, nephrotic syndrome and ______-failure.
|
heart
|
|
Ascites Causes
|
weight gain, abdominal distention, large volumes of fluid (10 to 20 Liters) can displace diaphragm and cause dyspnea
|
|
pathophysiology of ascites is the impaired excretion of _____ by the kidneys which results in water retention. Portal hypertension and ↓ _______which leads to capillary hydrostatic pressure exceeding capillary _______ pressure. Imbalance pushes water into the peritoneal cavity.
|
Na+, albumin, osmotic
|
|
Hepatitis A can be found in the feces, bile, and serum of infected individuals,. Usually transmitted by what route?? , Risk factors-Crowded, unsanitary conditions esp. _____ and ______ contamination
|
the fecal-oral route, Food and water
|
|
Hepatitis B Transmitted through contact with infected ?
|
blood, body fluids, or contaminated needles, The hepatitis B vaccine prevents transmission and development of hepatitis B
|
|
Hep B Maternal transmission can occur if the mother is infected during the ____trimester,
|
third
|
|
Hepatitis C is responsible for most cases of post-transfusion hepatitis, Also implicated in infections related to IV drug use, __% to ___% of hepatitis C cases result in chronic hepatitis
|
50-80%
|
|
An infant whose mother has hepatitis
|
hepB
|
|
Inflammatory process can damage and obstruct bile canaliculia, leading to cholestasis and _________jaundice
|
obstructive
|
|
Hepatitis Can range from absence of symptoms to
|
fulminating hepatitis with rapid onset of liver failure and coma (HBV most associated with fulminating type although rare in occurrence)
|
|
2 weeks after exposure, ends with appearance of jaundice – fatigue, anorexia, N&V, headache, fever a) Prodromal b) icteric c) recovery
|
a-prodromal
|
|
1 to 2 weeks after prodromal and lasts 2 to 6 weeks, jaundice, dark urine, clay-colored stools, liver enlargement – actual phase of illness a) Prodromal b) icteric c) recovery
|
b-icteric
|
|
after resolution of jaundice, about 6 to 8 weeks, symptoms diminish but liver remains enlarged and tender a) Prodromal b) icteric c) recovery
|
c-recovery
|
|
Chronic Viral Hepatitis
|
Caused by HBV, HCV, HDV
|
|
chronic viral hep. Clinical manifestations and liver inflammation persist after
|
acute phase
|
|
Principal cause of chronic liver disease, cirrhosis, and hepatocellular cancer in the world is
|
chronic viral hep
|
|
Chief reason for liver transplantation in adults is?
|
Chronic viral hep
|
|
Cirrhosis is
|
Irreversible inflammatory disease , Decreased hepatic function caused by nodular and fibrotic tissue synthesis (fibrosis)
|
|
Biliary channels become ______and cause portal hypertension. Because of the hypertension, blood can be shunted away from the liver, and a hypoxic necrosis develops
|
obstructed
|
|
alcoholic cirrhosis damages hepatocytes and inhibits export of _____, alters metabolism of vitamins and minerals, and induces ________
|
proteins, malnutrition
|
|
Cellular damage causes an inflammatory process, that along with necrosis, results in excessive
|
collagen formation, fibrosis and scarring. This alters the structure of the liver and obstructs biliary and vascular channels
|
|
Cirrhosis- Fatty infiltration occurs as lipogenesis and fatty acid oxydation [increases or decreases??] by damaged hepatocytes
|
decreases
|
|
cirrhosis Multi-system disease and as it progresses:
|
Hepatomegaly, Splenomegaly, Portal hypertension Leads to esophageal bleeding (varices), Hepatic encephalopathy, Results from impaired ammonia metabolism, Anemia – from blood loss and poor nutrition,
|
|
Biliary Cirrhosis Primary – autoimmune inflammation and destruction of small intrahepatic bile ducts; affects who
|
women and those older than 30 years
|