Autoimmune and Cholestatic Flashcards
(164 cards)
How do you treat Hep D?
Per IFNalpha for 12 months/ until undetectable HDV RNA/ALT normalization
What happens in liver transplant and HDV?
HDV confection is a risk factor for HepB viral replication, So need to give both HBIG and NA
What is treatment for Hep E
ribavirin
How do you test immunocompetent vs immunocompromised patients for Hep E?
immunocompetent: start with anti HEV IgM and IgG and RNA
immunocompromised, started with HEV RNA
What are extrahepatic manifestations of Hep E?
Mostly neurologic and renal:
Guillan Barre
Meningoencephalitis
Myosisitis
Renal complications: IgA nephropathy, membranoproliferazive
So if you see these and elevated LFTS, think Hep E
What is Harvoni?
sofo+led
genotype 1,4,5,6
What is epclusa
sofo+velpa
pangenotypic
what Is mayvret
glecaprevir+ pibrentsavir
pangenotypic
Can’t use in decompensated
What are options for HCV without cirrhosis?
Mayret (Glec +pib) 8 weeks
Epclusa (sof +vel) 12 weeks
How do you treat HCV in decompensated cirrhosis?
Ribavirin eligible:
Epclusa +ribavirin for 12 weeks
Harvoni + ribavirin for 12 weeks (1,4,5,6 only)
Ribavirin ineligible:
HArvoni (1,4,5,6) for 24 weeks
Epclusa for 24 weeks
Avoid protease inhibitors (previr) and interferon
What is the definition of ALF?
What is the UNOS criteria for ALF?
Definition: INR >1.5, encephalopathy (any degree), without pre-existing liver disease, duration of illness <26 weeks
UNOS criteria for 1A:
-HE within 8 weeks of the first symptoms of liver disease
-absence of pre-exisiting liver disease
-must be in the ICU
- must have life expectancy of less than 7 days
- must have one of the following
—ventilator dependence
—dialysis
— INR >2.0
What are factors that influence outcome of ALF?
- early recognition
- administration of NAC
- transfer to liver transplant center
- listing for liver transplant
What are the kings college criteria for ALF due to Tylenol?
It is a prognostic model to help identify those who should be referred to transplant. There is a criteria by etiology (Tylenol vs non Tylenol)
For Tylenol ALF:
List for OLT if
- pH<7.3 after resuscitation and >24 hours post ingestion
or
- lactic >3 after IVF
Strongly consider listing if
- Lactic >3.5 after IVF
List if all three occur within 24 hour period
1. HE>grade 3
2. Cr >3.4
3. INR>6.5
What is the kings criteria for ALF not due to Tylenol
INR>6.5 and HE present
OR three of the following 5 criteria
- indeterminate etiology, non acetaminophen drug induced, unfavorable etiology
- IND >3.5
- Interval from jaundice to encephalopathy >7 days
- Bilirubin >17
- Age <10 or >40
What are favorable etiologies of ALF? And what are unfavorable etiologies of ALF?
Favorable:
- Tylenol
- Pregnancy associated
- Hep A
- ischemic hepatitis
Unfavorable:
- wilson- won’t recover if presents with alf without transplant
- non-a viral hepatitis- majority will recover with supportive care but 1% present with alf and need transplant even if on antiviral
- mushroom intoxication- can treat with penicillin g and nac, but still need lt
- budd chiari syndrome
- yellow phosphorus
- non acetaminophen drug induced
- Indeterminate
Can lactulose be used in ALF HE?
no role, just causes ileum and bowel edema
What are predictors of cerebral edema in ALF?
- persistent ammonia >150-200
- younger age - decreased free space within cranium
- hyper acute ALF phenotype
What are non - invasive methods of monitoring ICP
trans-cranial doppler
optic nerve sheath diameter
pupillometry
What are general management for elevated ICP
- HOB elevation to 30
- Avoidance of excessive stimulation
- avoidance of unnecessary or routine tracheal suctioning
- avoidance of fever
- clamping of serum sodium to 140-145
sustained elevation:
- hypertonic saline 23.4% bolus
- mannitol - in those without renal dysfunction
-indomethicin
- mechanical ventillation- only as rescue
Per AASLD:
- in ICP, can give mannitol bolus as first line therapy, but prophylactic administration is not recommended
- in ALF patients at highest risk for cerebral edema (ammonia >150, HE, acute renal failure, vasopressors), prophylactic induction of hypernatremia with hypertonic saline to a sodium level of 145-155 is ok
When can charcoal be given in Tylenol overdose?
For patients with known or suspected tylenol overdose within four hours of presentation, given activated charcoal just prior to starting NAC
How to manage ALF from mushroom poisoning?
Amanita phalloides
No blood test
look for severe GI symptoms (nausea, vomiting, diarrhea, abdominal cramping)
Tx: penicillin G and NAC
Patients with ALF from mushroom poisoning should be listed for transplantation as this procedure is often the only lifesaving option
When is liver biopsy recommended in AIH and ALF?
when AIH is suspected as cause of ALF and autoantibodies are negative.
Can still treat with steroids but need to start workup for transplant, while getting steroids
How do you treat seizures in ALF?
phenytoin and benzodiazepines with short half lives, prophylactic phenytoin is not recommended
What type of PH is portal vein thrombosis and what hepatic vein pressure measurements do you see?
prehepatic
Free: normal
Wedged: normal
Gradient/HVPG: normal