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Prophylactic oral antibiotics do not reduce cholangitis incidence in patients with biliary atresiaAntibiotics do not prevent infection after Kasai portoenterostomy surgery

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Key Takeaway
Note that prophylactic oral antibiotics do not reduce the incidence of cholangitis in biliary atresia patients.

This meta-analysis evaluates the impact of prophylactic oral antibiotics on clinical outcomes in patients with biliary atresia who underwent Kasai portoenterostomy. The analysis included 516 patients to determine if antibiotic prophylaxis influenced the incidence of cholangitis, native liver survival (NLS) rate, and jaundice clearance rate.

The primary outcome, incidence of cholangitis, showed no statistically significant difference between the antibiotic group (56.91%) and the non-antibiotic group (56.59%) with an OR of 0.88 (95% CI: 0.41 to 1.92, P=0.75). Similarly, the jaundice clearance rate showed no significant difference (OR=0.97, 95% CI: 0.40 to 2.34, P=0.94) between the groups.

In contrast, the native liver survival (NLS) rate was significantly higher in the group receiving prophylactic oral antibiotics (54.35%) compared to the group without antibiotics (36.17%), with an OR of 2.15 (95% CI: 1.25 to 3.69, P=0.006). The authors note limitations including heterogeneity in antibiotic usage protocols and a need for higher quality prospective randomized controlled trials. Current evidence does not support the protective effect of prophylactic oral antibiotics against cholangitis following Kasai portoenterostomy.

How this fits prior evidence

This meta-analysis addresses a gap in clinical management for biliary atresia. While previous coverage noted that oral antibiotics may match longer regimens for pediatric bone and joint infections, this finding specifically addresses the role of oral antibiotics in biliary atresia. The results indicate that while antibiotics did not prevent cholangitis, they were associated with a significantly higher native liver survival rate (OR=2.15) in the analyzed population.

When children are born with biliary atresia, they often need a surgery called a Kasai portoenterostomy to help their bile flow. Doctors sometimes give these children oral antibiotics as a way to prevent cholangitis, which is a serious infection of the bile ducts. This study looked at 516 patients to see if those extra antibiotics actually made a difference.

The results showed that the extra antibiotics did not lower the rate of infection. Both groups had nearly identical rates of cholangitis. However, the study did find a significant difference in native liver survival. Children who received the antibiotics had a higher rate of liver survival compared to those who did not.

While the data suggests a link between antibiotics and better liver survival, the evidence is not yet perfect. The researchers noted that different ways of giving antibiotics made it harder to draw firm conclusions. More high-quality trials are needed to confirm these findings and understand exactly why the results appeared this way.

What this means for you:
Oral antibiotics do not prevent bile duct infections in children after Kasai portoenterostomy surgery.

Common questions

Do oral antibiotics prevent infections after surgery?

The study found no statistically significant difference in the rate of cholangitis between children who took prophylactic oral antibiotics and those who did not. Both groups had similar infection rates, meaning the extra antibiotics did not provide a protective effect against these specific infections.

Did the antibiotics help with liver survival?

Yes, the study found a significantly higher native liver survival rate in the group that received oral antibiotics. Specifically, the survival rate was 54.35% for those on antibiotics compared to 36.17% for those who were not.

Did antibiotics help clear jaundice?

The study found no significant difference in the jaundice clearance rate between the two groups. The rate was 42.71% for the group receiving antibiotics and 38.56% for the group that did not receive them.

Study Details

Study typeMeta analysis
EvidenceLevel 1
PublishedSep 2026
View Original Abstract ↓
BackgroundCholangitis is one of the most common and serious complications following Kasai portoenterostomy (KP) in patients with biliary atresia (BA). There is heterogeneity in antibiotic usage protocols across centers, and the efficacy of prophylactic oral antibiotics in preventing cholangitis remains unclear. This study aimed to assess the efficacy of prophylactic oral antibiotics in preventing cholangitis after KP in patients with BA.MethodsA systematic review and meta-analysis were conducted, incorporating all eligible studies published or presented as abstracts from inception to July 6th, 2026. Inclusion criteria required original data comparing the incidence of cholangitis in BA patients who received prophylactic oral antibiotics after KP versus those who did not receive. The primary outcome was the incidence of cholangitis within the follow-up period. Secondary outcomes included the native liver survival (NLS) rate and jaundice clearance rate. Subgroup analysis was conducted in the incidence of cholangitis according to study design [randomized controlled trial (RCT) and retrospective cohort vs. cross-sectional]. The Cochrane Risk of Bias tool, Newcastle-Ottawa Scale (NOS), and NOS-xs were used to assess the risk of bias. Heterogeneity among studies was assessed by the chi-square test, and the random-effects model or the fixed-effects model was selected according to heterogeneity.ResultsSix studies, comprising 516 BA patients, met eligibility criteria. No statistically significant difference was observed in the incidence of cholangitis between the antibiotics and non-antibiotics groups [56.91% (177/311) vs. 56.59% (116/205), P = 0.75, OR=0.88, 95% CI: 0.41–1.92]. Similar results were found in subgroup analysis. In contrast, the NLS rate was significantly lower in the non-antibiotics group [54.35% (75/138) vs. 36.17% (34/94), P = 0.006, OR=2.15, 95% CI: 1.25–3.69]. Jaundice clearance rates did not differ significantly between the antibiotics and non-antibiotics groups [42.71% (85/199) vs. 38.56% (59/153), P = 0.94, OR=0.97, 95% CI: 0.40–2.34].ConclusionCurrent evidence does not support the protective effect of prophylactic oral antibiotics against cholangitis following KP in BA. Further high-quality, prospective randomized controlled trials are warranted to clarify causality and optimize antibiotic stewardship.
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