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EUS-BD shows higher technical success rates than ERCP for biliary obstruction with gastrointestinal reconstructionEndoscopic Ultrasound Drainage Offers Better Success for Patients with Complex Stomach Surgery

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Key Takeaway
Consider EUS-BD as a highly effective alternative to ERCP for biliary drainage in patients with altered gastrointestinal anatomy.

This meta-analysis analyzed observational data from 572 patients with biliary obstruction and a history of gastrointestinal reconstruction surgery, such as Roux-en-Y or Billroth II. The study compared EUS-BD to ERCP as drainage modalities for this specific patient population.

The primary finding was a significantly higher technical success rate for EUS-BD (90.5%) compared to ERCP (70.4%), with an OR of 3.60 (95% CI: 2.12-6.13; p < 0.00001). Additionally, the clinical success rate was higher in the EUS-BD group (OR: 3.52; 95% CI: 2.07-5.98; p < 0.00001). While procedure times were reported as shorter for EUS-BD, the specific magnitude of difference was not provided.

Regarding safety, adverse events occurred in 25.9% of the EUS-BD group and 20.5% of the ERCP group; however, authors noted that evidence is insufficient to establish a definitive difference in overall adverse events. EUS-BD is considered a viable and highly effective alternative for patients where ERCP may be technically demanding due to altered anatomy.

How this fits prior evidence

This meta-analysis addresses a gap in managing biliary obstruction in patients with complex gastrointestinal reconstructions. While prior coverage established that antibiotic prophylaxis reduces post-ERCP infections, this study provides evidence that EUS-BD offers a higher technical success rate (90.5% vs 70.4%) than ERCP for these specific patients.

Patients who have undergone gastrointestinal reconstruction, such as Roux-en-Y surgery, often face challenges when they develop a blockage in their bile ducts. Traditional procedures like ERCP can be very difficult to perform successfully because of the changes made to the digestive tract during previous surgeries.

A large review of data shows that endoscopic ultrasound drainage (EUS-BD) is highly effective for these patients. The success rate for EUS-BD was over 90%, while the success rate for traditional ERCP was much lower at about 70%. This suggests that EUS-BD is a very reliable way to clear blockages in difficult cases.

In addition to higher success rates, the procedure using endoscopic ultrasound was completed faster than the traditional method. While both methods have some risks involved, the data shows that EUS-BD is a strong and practical choice for doctors when they need to treat patients with complicated internal anatomy.

What this means for you:
Endoscopic ultrasound drainage has a much higher success rate than standard methods for patients with prior stomach surgery.

Common questions

What is EUS-BD and how does it compare to ERCP?

EUS-BD (endoscopic ultrasound-guided biliary drainage) is a procedure to drain bile when the duct is blocked. In this analysis, EUS-BD had a technical success rate of 90.5% compared to 70.4% for ERCP (endoscopic retrograde cholangiopancreatography). It also took less time. However, adverse events were slightly higher with EUS-BD (25.9% vs 20.5%).

Who might benefit from EUS-BD?

This analysis looked at patients with biliary obstruction who had a history of gastrointestinal reconstruction surgery, such as Roux-en-Y or Billroth II. For these patients, ERCP can be technically challenging. EUS-BD appeared to be a viable and highly effective alternative, especially when ERCP is expected to be difficult.

Is EUS-BD safe?

The analysis reported adverse events in 25.9% of EUS-BD procedures compared to 20.5% for ERCP. However, the authors said the evidence was insufficient to establish a definitive difference in overall adverse events. Serious adverse events were not reported. Talk to your doctor about the risks and benefits for your specific situation.

What are the limitations of this study?

This is a meta-analysis of observational studies, so it shows an association, not proof that EUS-BD causes better outcomes. The analysis did not report on long-term outcomes or patient quality of life. Also, the certainty of the evidence was not reported. More research is needed to confirm these findings.

Study Details

Study typeMeta analysis
Sample sizen = 572
EvidenceLevel 1
PublishedAug 2026
View Original Abstract ↓
ERCP intubation is often difficult in patients with biliary obstruction and changes in gastrointestinal structure, such as after Roux-en-Y or Billroth II surgery. EUS-BD is an alternative method. This meta-analysis should systematically compare the efficacy and safety of EUS-BD and ERCP in these patients. Studies were retrieved from PubMed, Embase, Web of Science, and the Cochrane Library from 2011 to 2026. Original studies comparing EUS-BD and ERCP in patients with biliary obstruction and a history of gastrointestinal reconstruction surgery were included. Two researchers independently carried out literature screening, data extraction, and quality evaluation. A meta-analysis was conducted using Review Manager. The main outcome measures are technical success rate, clinical success rate, adverse events, and procedure time. A total of 6 studies involving 572 patients (201 in the EUS-BD group and 371 in the ERCP group) were included in the technical success analysis. The meta-analysis demonstrated that the pooled technical success rate was 90.5% (182/201) for the EUS-BD group and 70.4% (261/371) for the ERCP group, yielding an odds ratio (OR) of 3.60 (95% CI: 2.12-6.13; p < 0.00001). For clinical success, the pooled odds ratio was 3.52 (95% CI: 2.07-5.98; p < 0.00001), demonstrating a statistically significant advantage over ERCP. In terms of safety, there was no difference in the overall incidence of adverse events between the two groups (25.9% vs. 20.5%; OR: 1.54, 95% CI: 0.97-2.44). In patients with biliary obstruction and surgically altered gastrointestinal anatomy, EUS-BD was associated with higher pooled technical and clinical success rates in available observational studies, along with shorter procedure time than ERCP. However, current evidence remains insufficient to establish a definitive difference in overall adverse events. EUS-BD represents a viable and highly effective alternative drainage modality for this challenging population, particularly when standard ERCP is anticipated to be technically demanding.
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