Simultaneous EUS and ERCP-related procedures using a novel oblique-veiwing convex EUS

A single center prospective study on simultaneous endoscopic ultrasound-related procedures and endoscopic retrograde cholangiopancreatography-related procedures using a novel oblique-veiwing curved linear array echoendoscope

Status

Active, not recruiting

Phases

Phase 2

Study type

Observational

Source

JPRN

Registry ID

JPRN-jRCT1030250433

Enrollment

Registered

2025-10-15

Start date

2025-10-15

Completion date

Unknown

Last updated

2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Biliary tract disorders, Pancreartic disorders ERCP, EUS, single session

Interventions

None listed

Eligibility

Inclusion criteria

Inclusion criteria: 1) Patients undergoing their first ERCP in whom both ERCP-related and EUS-related procedures using a oblique-viewing convex-array echoendoscope are planned to be performed in the same session. 2) Patients aged 18 years or older at the time of obtaining informed consent. 3) Patients who have received a full explanation about this study, have fully understood the information, and have provided written informed consent of their own free will.

Exclusion criteria

Exclusion criteria: 1) Patients who have previously undergone any procedure involving the duodenal papilla 2) Patients with a history of gastrointestinal reconstruction other than Billroth 1 gastrectomy. 3) Patients with a bleeding tendency. 4) Patients at high risk of thromboembolism for whom discontinuation or substitution of antithrombotic agents is not possible according to the guidelines for Gastrointestinal Endoscopy in Patients Undergoing Antithrombotic Treatment. 5) Patients with heart failure or respiratory failure . 6) Patients who are pregnant or may possibly be pregnant. 7) Patients who are unable to provide written informed consent or who withdraw their consent. 8) Any other patients deemed inappropriate for inclusion by the principal investigator.

Design outcomes

Primary

Measure	Time frame
Success rate of ERCP-related procedures performed using a oblique-viewing convex-array echoendoscope in cases where both ERCP- and EUS-related procedures are conducted.	—

Secondary

Measure	Time frame
1) Overall success rate of ERCP-related procedures, including cases in which the duodenoscope was used instead (including procedures performed on different days). 2) Success rate of EUS-related procedures. 3) Details of alternative treatments and overall final procedural success rate (including procedures performed on different days) in cases where ERCP-related procedures were unsuccessful. 4) Procedure time for ERCP-related and EUS-related procedures. 5) Type, severity, and management of early adverse events occurring within 14 days after the procedure. 6) Analysis of factors contributing to the success rate of ERCP-related procedures performed using a forward-viewing convex-array echoendoscope.	—

Measure

Time frame

1) Overall success rate of ERCP-related procedures, including cases in which the duodenoscope was used instead (including procedures performed on different days). 2) Success rate of EUS-related procedures. 3) Details of alternative treatments and overall final procedural success rate (including procedures performed on different days) in cases where ERCP-related procedures were unsuccessful. 4) Procedure time for ERCP-related and EUS-related procedures. 5) Type, severity, and management of early adverse events occurring within 14 days after the procedure. 6) Analysis of factors contributing to the success rate of ERCP-related procedures performed using a forward-viewing convex-array echoendoscope.

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Contacts

Public ContactSaburo Matsubara

Saitama Medical Center, Saitama Medical University

saburo.matsubara@gmail.com+81-49-228-3400

Outcome results