Hepatitis/Cirrhosis Flashcards
What is viral hepatitis and cirrhosis of the liver?
- inflammation of the liver due to viral infection
- Hep. A,B,C,D,E,G are all viral
- Hep. A, B, C common in canada
What are the lobules?
functional unit of the liver
What does the liver do?
- filters circulating blood
- removes toxins
- aids in digestion
- regulates sugar
- makes and stores proteins/vitamins/fats
Prevention of hepatitis?
- Vaccinations
- No sharing of personal hygiene products
- Safe sex
Non-modifiable risk factors for viral hepatitis?
Culture and ethnicity
-first nation groups have 5.5 times higher rate of hep. C infection
Gender
-hep. c infection rate 2x higher in young men
Modifiable risk factors for viral hepatitis?
- Prison inmates at higher risk of Hepatitis C infection
- Injection drug users have higher rates of hepatitis C infection
Pathophysiology of viral liver disease?
- inflammation of liver tissue
- During acute infection, liver damage is mediated by natural killer cells that cause lysis of infected hepatocytes resulting in cell death
- Liver cells normally regenerate through cellular replication and resume normal function
- Cellular replication may not be possible if liver cell loss is massive
Manifestations of acute hepatitis? + who is at risk?
-pain in upper right quadrant of abdomen
-nausea & vomiting
-loss of appetite
-jaundice
-fatigue
-itching
(usually no symptoms in acute phase. Lasts from 1-4 months)
At Risk:
- ppl who share needles
- healthcare workers exposed to infected blood
Manifestations of chronic hepatitis?
- Malaise
- Easy fatigability
- Myalgia (muscle pain)
- Arthralgia (joint pain)
- Hepatomegaly
Diagnostic Studies for viral hepatitis?
- Viral serology (can screen for current/past infection)
- Serum liver enzymes (ALP & AST will be elevated when liver damage is present)
- Liver function tests (LFT’s)
- bilirubin function test; will not be excreted if liver is damaged
- liver albumin will also be decreased
- prothrombin time and INR test. when elevated, it marks an injured liver
Hep A transmission through?
fecal-oral route. Mainly by ingesting food/liquid with the virus
Prevention precautions for hep. A
- vaccine
- hand washing
Hep B transmission through? + Most common in?
- Transmission by blood and body fluids, nail clippers, sharing of personal hygiene products, body piercings, tattoos
- Immigrants
Highly infectious and can live outside the human body for up to 7 days
doesn’t always go away and can lead to chronic infection
Treatment of chronic hep. B? + Goals of drug therapy?
- interferons
- oral antiviral agents
Goals:
-Decrease viral load decrease liver enzyme levels (interferon)
-Decrease the rate of disease progression (antiviral agent)
Not a cure
Transmission of Hep. C?
-blood and body fluids
likely to cause liver damage
common in individuals between 15-34
Treatment of chronic Hep. C?
- Can be cured with drug treatment
- Combination of interferon and Ribavirin
- Protease Inhibitors may be added to treatment
- Patients with fibrosis and cirrhosis can be treated with the drugs as long as the cirrhosis is compensated
Prevention for Hep. B + C?
- not sharing personal hygiene products
- safe sex