StayCurrentMD · Biliary Atresia: Where are we now? Advanced Practice Providers Pediatric...
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Video48 min·Published Jul 2017Older

Biliary Atresia: Where are we now? Advanced Practice Providers Pediatric...

With Dr. Todd Ponsky · StayCurrentMD
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What the experts said38 expert statements · 1 host summary
Pathologic jaundice occurs in 1 in 2500 live births
Epidemiological
Biliary atresia is a progressive, obliterative, idiopathic cholangiopathy with two forms: perinatal/postnatal (80-90%) and fetal/embryonic (10-20%)
Clinical
Biliary atresia incidence ranges from 1 in 5000 in Taiwan, 1 in 8-10,000 in Japan, and 1 in 18,000 in the United States and Europe
Epidemiological
More females than males are affected by biliary atresia
Epidemiological
Seasonal clustering of biliary atresia cases suggests viruses or infectious processes may be triggers
Clinical
Biliary atresia is lethal if untreated
Clinical
If conjugated or direct bilirubin is greater than or equal to 2, the child needs closer evaluation
Guideline
Some babies with biliary atresia have normal ultrasounds
Clinical
The gold standard for biliary atresia diagnosis is the intraoperative cholangiogram
Guideline
At Children's Hospital Los Angeles, babies are pre-treated with 5 days of phenobarbital before HIDA scan
Clinical
Timing of diagnosis and Kasai procedure is extremely important, with the sweet spot being 6 to 8 weeks of age
Clinical
A French study showed 23% of Kasai patients had their native liver 20 years post-Kasai
Epidemiological
Factors affecting survival with native liver include age at Kasai, type of biliary atresia, liver histology (bridging fibrosis), and center caseload
Clinical
In England, consolidating Kasai procedures to 3 centers increased success rates
Epidemiological
At Children's Hospital Los Angeles, 6 to 12 biliary atresia cases are seen per year, considered a high rate
Epidemiological
If cirrhosis is seen on liver biopsy or frozen section during intraoperative cholangiogram, the procedure is stopped and the patient is listed for transplant
Clinical
Kasai procedures in older babies (3.5-4 months) can bridge patients to transplant at one year of age, though with complications including ascending cholangitis and frequent hospitalizations
Clinical
Bigger babies at time of transplant have easier transplant procedures
Opinion
Children's Hospital Los Angeles has a very large, possibly the largest, living donor liver transplant center in the country, offering an alternative to cadaveric transplant
Clinical
Most centers put babies on antibiotic prophylaxis postoperatively until they are eating
Clinical
Post-operative steroids for biliary atresia are unproven
Clinical
At Children's Hospital Los Angeles, peripheral IV lines are used postoperatively rather than Broviacs, and babies are not sent home on IV antibiotics
Clinical
Babies are switched from IV antibiotics to Bactrim once taking orals; babies under 6 weeks receive amoxicillin until 6 weeks of age, then switch to Bactrim at 4-5 mg/kg/day
Clinical
Babies are placed on ursodeoxycholic acid twice daily post-Kasai
Clinical
Biliary atresia babies are often deficient in fat-soluble vitamins D, E, and K, which are supplemented using aqueous solutions (Aquadek or ADeck) for better absorption
Clinical
Probiotics, herbal remedies, and omega-3 supplements have not been proven beneficial for biliary atresia
Clinical
The BARC (Biliary Atresia Research Consortium) protocol enrolled 140 babies in a randomized double-blind placebo-controlled study with steroids
Clinical
When a post-Kasai baby has unexplained fever, ascending cholangitis is suspected
Clinical
Multiple episodes of ascending cholangitis cause further liver damage and may lead to earlier need for transplant
Clinical
Biliary atresia is the most common indication for pediatric liver transplant
Epidemiological
The American Academy of Pediatrics policy states all jaundiced infants at 2 weeks of age should have a fractionated bilirubin done
Guideline
In England, Caucasian babies with biliary atresia were diagnosed at average 47 days of age, non-white babies at 52 days, and all babies diagnosed after 100 days were non-Caucasian
Epidemiological
In an English study of stool color identification, 37% of physicians and nurses did not correctly identify suspect stools using stool color cards
Epidemiological
The BARC trial of 140 randomized babies showed no benefit from steroid use in improving native liver survival, though steroids did produce more rapid bilirubin drop
Clinical
Multiple studies found increased jaundice clearance with steroids but none found prevention or lengthening of time until transplant
Clinical
In Taiwan and other Asian countries, stool cards are sent home with every discharged baby to help parents identify abnormal stool color
Clinical
Children's Hospital Los Angeles will be a site for a new trial using intravenous immunoglobulin following Kasai, hoping to inhibit immune-mediated bile duct injury
Clinical
Postoperative stool color (brown or green) is more important than immediate postoperative bilirubin levels
Opinion
The 30-30-30 rule for Kasai outcomes: 30% work great, 30% never work, 30% may work temporarily long enough to get a transplant but may fail
Host summary