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34 Cards in this Set

  • Front
  • Back
Most common complications of hepatic dysfunction are?
Manifested as?
Based on?
continued bleeding , sepsis, and hepatic decompensation
Manifested as jaundice, categorized as prehepatic, intrahepatic, post hepatic
Based on repeated measures of bilirubin, transaminase enzmes and alk phos
Caused by hemolysis, hematoma reabsorpition, bilirubin overload from whole blood
Characterized by what?
prehepatic dysfunction
characterized by
increased unconjugated bilirubin
normal plasma transaminase
normal alk phos
Caused by viral hepatitis, drug toxicity, sepsis, arterial hypoxemia, cirrhosis
characterized by what?
Intrahepatic dysfunction
Characterized by
Increased conjugated bilirubin
Markedly increased plasma transaminase
Normal to slightly elevated alkaline phosphatase
Also known as hepatocellular dysfunction
Caused by retained common bile duct stone, can also be caused by sepsis.
characterized by?
Post hepatic dysfunction
characterized by
increased conjugated bilirubin
normal to slightly slevated transaminase
markedly increased alk phos
urine contain large amounts conjugated bilirubin
causes difficult to confirm, liver function often returns to normal without specific treatment
Extrahepatic dysfunction
Inflammatory disease of hepatocytes, most often due to viral infections or ingestion of toxic drugs
Acute hepatitis
Causes of Viral hepatitis
Type A, B, C, epstein Barr, cytomegalovirus
Early symptoms of viral Hepatitis
Dark urine, fatique, anorexia, nausea, fever, abdominal discomfort
Lab values Viral hepatitis
Plasma transaminases elevated 7-14 days before onset of jaundice and decline after jaundice is noticable
Bilirubin not greater 20mg/dl unless liver disease is severe or hemolysis is also present
Severe and potentially fatal hepatitis is suggested by what?
plasma albumin 2.5 or markedly long prothrombin time
Infectious hepatitis or short incubation hepatitis
highl infectious and cross contamination within families is very common
Transmission by fecal-oral route
What reduces severity?
Does chronic carries state exist?
Hepatitis A
Pooled gamma globulin greatly reduces severity of type A hepatitis
chronic liver disease or carrier state does not develop
Most common form viral hepatitis
transmission via blood transfusion, percutaneous ionculation, oral to oral and sexual activity
Chronic carrier?
Cancer?
Hepatitis B virus
Persistence of HBsAg longer than six months in the absence of antibodies indicates that the patient is a chronic arrier and can potentialy infect others
Primary hepatocellular carcinoma is 220 times more likely to develop in chronic carriers
Route of transmission inoculation, liver disease often develops and chronic state is common
Hepatitis C
What drugs can cause hepatitis and when do clinical signs occur?
antibiotics, antihypertensives, anticonvulsants, analgesics, tranquilizers, and anesthetics
Signs occur 2-6 weeks after starting drug therapy
Unresolving disease caused by a virus, drugs, inborn errors of metabolism or unkown factors.
Moslty associated with what?
Divided into what?
chronic hepatitis
Mostly associated with hepatitis B
Divided into chronic active or chronic persistent hepatitis
Most serious form chronic hepatitis
Ultimately resulting in cirrhosis and hepatic failure
widespread inflammation and destruction of hepatocytes
What treated with
chronic Active hepatitis
Treated with corticosteroids with or without azathioprine
Benign non progressive inflammatory disease mainly confined to portal area-type chronic hepatitis
How treat?
chronic persistent hepatits
nutrition, avoidance of potential hepatotoxins and frequent observation is treatment
S/S include hepatic encephalopathy, hyperventilation, high ammonia levels, hypoglycemia, metabolic acidosis, increased CO, renal failure, thromobocytopenia, DIC, anemia
Acute Hepatic failure
regardless of etiology, is associated with a poor prognosis
plasma transaminase levels are high and parallet the extent of hepatic injury
Treatment supportive, N-acetylcyseine is a antioxidant that improves oxygen content
the only curative therapy for patients in hepatic failure is?
liver transplant
Chronic disease process which destroys the hepatic parenchyma and replaces it with collagen.
Most frequent cause is?
cirrhosis
alcohol most frequent cause
alcoholic cirrhois occurs in what percent of those who consume how much alcohol?
10% of those who consume 80g of alcohol daily for ten years
Characterized by jaundice in assocaition with elevations of the plasma transaminase enzymes,
Ascites occurs in 50% of patients
Plasma albumin may be reduced below 3g/dL
Prothrombin prolonged
Acute Alcoholic Hepatitis
Develops several years after first attack of alcoholic hepatitis
Portal vein hypertension
Why does ascites occur with portal vein hypertension?
ascites is due to decreased oncotic pressure secondary to low plasma albumin, elevated resistance to blood flow through the portal vein system and increased secretion of ADH
What are lab values with portal vein hypertension?
Hematocrit
Na
Bun
liver
hematocrit 30-35
hyponatremia
Bun<10
bilirubin, transaminases, alk phos mildly to moderatley elevated
Alcoholic cirrhosis complications are?
hyperdynamic circulation
arterial hypoxemia
hypoglycemia
gallstones
duodenal ulcer
gastroesophageal varices
hepatic encephalopathy
impaired immune defense
compensensatory neuronal excitablility and catecholamine release following abrupt d/c of alcohol
6-8 hrs after abstinence
Autonomic nervous system imbalance may be reflected by HTN, tachycardia, and dysrhythmias
minor alcohol withdrawal syndrome
Occurs in 5% of alcoholic pts
Medical emergency
onset 48-72 hrs after stop drinking
Increased SNS with catecholamine release leading to diaphoresis, hyperpyrexia, htn, and tachycardia
grand mal seizures can be first sign
Severe alcohol withdrawal
Chronic , progressive and often fatal cholestatic liver disease
Characterized by destruction of intrahepatic bile ducts, portal inflammation and scarring
development of cirrhosis and liver failure
primary biliary cirrhosis
Excess amounts of iron are deposited in hepatocytes, leading to scarring and cirrhosis
treated by repeated phlebotomy
hemochromatosis
manifested by the presence of gallstones, may present as acute cholecystitis or chronic chollithiasis
Diseases of biliary tract
Almost always due to obstruction of the cystic duct by gallstones
Rapid onset of severe pain in the mid epigastrium which extends into the right upper abdomen, have Murphs sign
Acute cholecytitis
The development of fibrotic gallbladders, which are not capable of contracting to expel bile.
Chronic cholelithiasis
inflammation of the hepatic biliary tree which develops in response to obstruction of the biliary tract
Chronic cholangitis