Viral hepatitis: Difference between revisions
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== | ==Background== | ||
===Hepatitis A=== | ===Hepatitis A=== | ||
*Most common form of transmission occurs from asymptomatic children to adults | *Most common form of transmission occurs from asymptomatic children to adults | ||
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*>75% of pts advance to chronic stage | *>75% of pts advance to chronic stage | ||
*Active disease identified by reactive HCV ab and positive HCV RNA | *Active disease identified by reactive HCV ab and positive HCV RNA | ||
==Clinical Features== | |||
==Differential Diagnosis== | ==Differential Diagnosis== | ||
{{Acute hepatitis causes}} | {{Acute hepatitis causes}} | ||
==Diagnosis== | |||
*Hepatitis pannel | |||
==Treatment== | |||
==Disposition== | ==Disposition== | ||
Revision as of 10:58, 7 February 2016
Background
Hepatitis A
- Most common form of transmission occurs from asymptomatic children to adults
- Incubation period: 15-50d
- Prodrome: N/V, malaise, fever, abd pain
- 1wk later bilirubinuria, clay-colored stool, jaundice
- Death from hepatic failure is rare
Hepatitis B
- Incubation period: 1-3 months
- Presentation is similar to hep A
- Lab tests:
- HBsAg: + implies infection
- Anti-HBs: implies clearance or vaccination
- Anti-HBc: Implies prior infection; IgM = acute & in flares; IgG always present
- HBe-Ag: Implies active viral replication & infectivity
- HBV DNA: Similar to HBe-Ag but more sensitive
Hepatitis C
- Unlike Hep A and B, most often asymptomatic in acute phase of infection
- >75% of pts advance to chronic stage
- Active disease identified by reactive HCV ab and positive HCV RNA
Clinical Features
Differential Diagnosis
Causes of acute hepatitis
- Acetaminophen toxicity (most common cause of acute liver failure in the US[1])
- Viral hepatitis
- Toxoplasmosis
- Acute alcoholic hepatitis
- Toxins
- Ischemic hepatitis
- Autoimmune hepatitis
- Wilson's disease
Diagnosis
- Hepatitis pannel
Treatment
Disposition
Admit Criteria
- INR >2
- Unable tol POs
- Pain control
- Bilirubin >30
- Hypoglycemia
- Significant comorbid illness/immunocomp
- >50 years
See Also
Source
Adapted from Stevens, Donaldson, Pani
- ↑ Ostapowicz G, Fontana RJ, Schiodt FV, et al. Results of a prospective study of acute liver failure at 17 tertiary care centers in the United States. Ann Intern Med. 2002 Dec 17; 137(12): 947-54.