hepatic disorders Flashcards
functional cells of the liver
hepatocytes
portal vein
carries absorbed products of digestion directly to the liver; branches in the liver where it comes into contact with each lobule
functions of the liver
prevents shortages of nutrients by storing vit, minerals, sugar
produces most proteins needed by body
produces bile, a compound needed to digest fat and absorb vit A, D, E, K
produces most of the substances that regulate blood clotting
helps body fight infection by removing bacteria
metabolizes nutrients from food to produce energy
removes toxic byproducts of medications
causes of hepatitis
viral (most common) drugs (alcohol) chemicals autoimmune diseases metabolic abnormalities
route of transmission for hep A
fecal-oral (a lot of people in small area)
incubation period for hep A
15-50 days; most infectious 2 weeks before symptoms and 1-2 weeks after
risk factors for hep A
crowded conditions (family members, institutionalized, workers at day care)
poor sanitation
contaminated food products
route of transmission for hep B
percutaneous
sexual contact
perinatal
incubation period for hep B
45-180 days
route of transmission for hep C
percutaneous
sexual contract
perinatal
incubation period for hep C
14-180 days
risk factors for hep C
contaminated needles
blood products
sex with infected partner
men having sex with men
hep A
mild flu-like symptoms, acute with jaundice
incidence decreased with vaccination
RNA virus transmitted via fecal-oral route
contaminated food or drinking water
hep A education
good hygiene, proper handling of food, cautious in crowds, sanitary conditions
hep B
acute or chronic
incidence decreased with vaccination
DNA virus transmitted perinatally, percutaneously, mucosal exposure
can live in saliva
at risk for hep B
men who have sex with men household contact of chronically infected patients underdoing hemodialysis health care workers transplant recipients immunosuppressed