Grand Rounds · Biliary Atresia with Dr. Greg Tiao
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Video11 min·Published Jun 2022Older

Biliary Atresia with Dr. Greg Tiao

With Dr. Greg Tiao · hosted by Dr. Em Gootee & Dr. Todd Ponsky & Dr. Ellen Encisco · Grand Rounds
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What the experts said45 expert statements · 2 host summaries
Biliary atresia is an uncommon disease that results in an obstructive cholangiopathy of the biliary system
ClinicalGreg Tiao
Biliary atresia is unique to infancy
ClinicalGreg Tiao
Biliary atresia is the most common cause for end-stage liver disease in children
EpidemiologicalGreg Tiao
The etiology of biliary atresia is uncertain
ClinicalGreg Tiao
Biliary atresia causes a biliary epithelial injury process that causes biliary obstruction
ClinicalGreg Tiao
Untreated biliary atresia causes progressive cholestasis, portal fibrosis, eventually cirrhosis, portal hypertension, and can cause death by the age of 2 years
ClinicalGreg Tiao
In the Far East, biliary atresia incidence is estimated at 1 in 8000 live births
EpidemiologicalGreg Tiao
In the United States, biliary atresia incidence is 1 in 15,000 live births
EpidemiologicalGreg Tiao
Infants with biliary atresia typically present with jaundice as the first clinical manifestation
ClinicalGreg Tiao
Patients with biliary atresia have acholic or very pale gray stools
ClinicalGreg Tiao
Patients with biliary atresia have dark urine
ClinicalGreg Tiao
The liver in biliary atresia becomes quite firm and is usually palpable in the right costochondral margin
ClinicalGreg Tiao
Biliary atresia typically presents between 1 to 2 months of age
ClinicalGreg Tiao
Screening can pick up biliary atresia at an earlier stage and has been demonstrated to improve outcomes
ClinicalGreg Tiao
The most common reason an infant has jaundice is physiologic jaundice of the newborn
ClinicalGreg Tiao
Indirect hyperbilirubinemia indicates physiologic jaundice
ClinicalGreg Tiao
Direct hyperbilirubinemia indicates a more pathologic process
ClinicalGreg Tiao
Anatomic causes of direct hyperbilirubinemia include biliary atresia, choledochal cysts, and inspissated bile syndrome
ClinicalGreg Tiao
Hepatocellular causes of direct hyperbilirubinemia include viral hepatitis, sepsis, PFIC syndromes, alpha-1 antitrypsin deficiency, tyrosinemia, and transport abnormalities
ClinicalGreg Tiao
Workup for biliary atresia includes liver profile with GGT, alpha-1 antitrypsin genotype, and TORCH workup
ClinicalGreg Tiao
Patients are screened for cystic fibrosis, hypothyroidism, and galactosemia as part of perinatal screening
ClinicalGreg Tiao
Matrix metalloproteinase 7 (MMP-7) is a new biochemical marker with very high diagnostic sensitivity and specificity for biliary atresia
ClinicalGreg Tiao
Ultrasound is the first imaging test typically obtained for biliary atresia workup
ClinicalGreg Tiao
HIDA scan is fairly sensitive but has quite low specificity for biliary atresia and can delay workup and diagnosis
ClinicalGreg Tiao
Liver biopsy is the gold standard for diagnosing biliary atresia
ClinicalGreg Tiao
Classic biopsy findings of biliary atresia include expansion of the periportal space with mononuclear cells, bile duct proliferation, and bile duct plugs within proliferating periportal biliary ducts
ClinicalGreg Tiao
Bile duct plugs are the pathognomonic finding of biliary atresia on biopsy
ClinicalGreg Tiao
Treatment options for biliary atresia are surgical and include Kasai portoenterostomy or liver transplantation
ClinicalGreg Tiao
As long as the patient reaches the OR before 70-75 days, the success rate of Kasai procedure justifies the small morbidity risks
ClinicalGreg Tiao
In older patients with manifestations of cirrhosis including ascites and coagulopathy, consideration for primary transplant is warranted
ClinicalGreg Tiao
Both Kasai and transplant procedures require an intraoperative cholangiogram to establish anatomy and visualize patency of the common hepatic duct and intrahepatic components
ClinicalGreg Tiao
In Kasai procedure, the gallbladder is mobilized to identify the common bile duct and common hepatic duct, with dissection carried laterally to where arteries branch
ClinicalGreg Tiao
The hilar plate in biliary atresia has a triangle-like appearance extending from the common hepatic duct to a broader base
ClinicalGreg Tiao
The hilar plate is divided in one sharp transection right proximal to Glisson's capsule
ClinicalGreg Tiao
A 30 to 35 centimeter Roux-en-Y limb is created and brought up in a retrocolic fashion for hilar plate reconstruction
ClinicalGreg Tiao
The most worrisome complication of Kasai is vascular injury to the portal vein or hepatic artery
ClinicalGreg Tiao
During Kasai, anything that is easily demonstrable should not be divided; if you think it's a vessel, don't divide it because it may be a segmental artery of importance
OpinionGreg Tiao
Other complications of Kasai include bowel obstruction and wound issues
ClinicalGreg Tiao
Cholangitis is a longer-term concern after Kasai, but requires adequate bile flow to occur
ClinicalGreg Tiao
Cholangitis after Kasai is presumed to be an ascending process and can be suppressed with antibiotics
ClinicalGreg Tiao
In the United States, most Kasai patients are discharged home within 5 to 7 days after the procedure
ClinicalGreg Tiao
Post-Kasai patients require multidisciplinary care with both surgeon and gastroenterologist follow-up
ClinicalGreg Tiao
Post-Kasai patients are on prophylactic antibiotics, Actigall, and require nutritional support including fat-soluble vitamins and elemental diets
ClinicalGreg Tiao
A successful Kasai is defined as direct bilirubin under 2 at 3 months of age
ClinicalGreg Tiao
Immediate post-operative success indicator is a pigmented stool, which indicates the patient is draining
ClinicalGreg Tiao
Biliary atresia is the most common cause of end-stage liver failure in the pediatric patient population
Host summaryEm Gootee · not cited in answers
Biliary atresia is the number one reason for pediatric liver transplant
Host summaryEm Gootee · not cited in answers