Viral Hepatitis Flashcards
(42 cards)
How many types of viral hepatitis?
5
A, B, C, D, E
Which types are enteric transmission?
A and E
What does enteric transmission mean?
GI system, transmitted through ingestion by something like dirty water with decal contamination
How are HBV, HCV and HDV transmitted?
Parenteral, blood tranmission
Which type depends on the presence of another type?
Hep D depends on Hep B to be present, thus when we vaccinate against Hep B we are also doing so against Hep D
Which type is classified as picornavirus?
HAV
Which type is classified as hepacivirus?
HCV
Which type is classified as hepadnavirus?
HBV
Which type is classified as hepevirus?
HEV
Which type is classified as deltavirus?
HDV
Which of the types have possible chronicity?
HBV and HDV uncommon
HCV common
What is the pathway for acute viral hepatitis sign and symptom wise?
Flulike illness
Pre-icteric phase
Icteric phase (yellow appearance) with pre-icteric phase symptoms persisting
What does icteric mean?
Yellow or jaundice, jaundice means greenish yellow
What causes the yellow colour?
Accumulation of bilirubin by hepatocellular damage
Possible outcomes of acute viral hepatitis?
Recovery- no more signs and symptoms
Chronic infection- carrier state
Chronic active hepatitis- asymptomatic
Chronic active hepatitis
Outcomes of chronic active hepatitis?
Liver cirrhosis
Portal hypertension
Portal thrombosis
Hepatic failure
What are the possible complications of chronic active hepatitis?
Hepatocellular carcinoma
Extra-hepatic lesions
What age group has highest percentage of developing chronic infection if infected with HBV?
Neonates (90%), this is why vaccinate right away
25-50% as infants
5-10% as adults
What percentage of HBV carriers develop chronic active hepatitis?
25% of carriers
What percentage of HCV infected individuals develop chronic infection/carrier state? What percentage develop chronic active hepatitis?
80-90% carrier state
40-50% chronic active hepatitis
Which hepatitis has the highest risk of developing hepatocellular carcinoma?
HCV
What is the most common chronic blood borne infection in the US?
HCV
About what percent of chronic active HCV hepatitis patients progress to various degrees of liver cirrhosis?
About 1/4
What type if necrosis is viewed histologically with chronic active hepatitis?
“Piecemeal” necrosis, liver cells are replaced with chronic inflammation