Clinical trial · Interventional
Does Endoscope Position Detecting Unit Facilitate a Complete Colonoscopy Examination
Does Endoscope Position Detecting Unit Facilitate Caecal Intubation? A Randomized Controlled Trial
- Source
- ClinicalTrials.gov
- Retrieved
- Sep 8, 2026
- Layer
- normalized (units and labels harmonized; values unchanged)
- Run
- ING-CLINICALTRIALS-20260908-000001
Summary
Brief summary (as posted)
As the incidence of colorectal cancer (CRC) has been rapidly rising in Asian countries, more and more screening colonoscopies are now being performed for prevention or early detection of this fatal disease. Complete colonoscopy as indicated by caecal intubation is essential to make it a reliable screening tool for colorectal cancer or polyps. Cecal intubation rate is highly variable and dependent on individual experience. Colonic looping is the commonest cause of incomplete colonoscopy. Magnetic endoscope imaging (MEI) is a non-radiological imaging technique to provide real time, three-dimensional image and position of the colonoscope during the procedure. It may facilitate straightening of colonic loops and hence cecal intubation. The investigators aim to evaluate the benefit of MEI in term of cecal intubation rate across endoscopists of all levels of experience by making use of the newly developed Endoscopy Position Detecting Unit (UPD-3)by Olympus Optical Co, Ltd, Japan. The investigators propose to conduct a prospective randomized controlled trial to compare the caecal intubation rate of colonoscopy being performed with and without UPD-3 guidance. Colonoscopies performed by endoscopists with different level of experience will be randomized to UPD-3 guided group or conventional group (no UPD-3 guidance). Patient controlled sedation (PCS) containing propofol and alfentanil will be given to all patients. The investigators hypothesize that UPD-3 guided colonoscopy is associated with high caecal intubation rate (complete colonoscopy), shorter time to caecum, less patient pain and lower sedative medication requirement. A high caecal intubation rate facilitates a reliable colonoscopy screening. Decreased colonic looping and shorter time to caecum may reduce patient discomfort during the procedure. It may also facilitate learning and acquiring the skill of colonoscopy in trainees.
Conditions
Conditions (1)
Free-text conditions as registered, with the CancerIndex entity they were reconciled to and the match type.
| Condition (as posted) | Mapped entity | Match | Confidence |
|---|---|---|---|
| Colorectal Neoplasms | Colorectal Neoplasm | ONTOLOGY_EXACT | 0.98 |
Interventions
Interventions (1)
| Intervention | Type | Mapped drug | Match |
|---|---|---|---|
| UPD guidance | Procedure | — | UNRESOLVED |
Design
Arms and outcomes
Arms (2)
- type
- EXPERIMENTAL
- label
- UPD guided group
- description
- Both the colonoscopist and assistant will be viewing the imager screen during the whole procedure.
- interventionNames
- Procedure: UPD guidance
- type
- NO_INTERVENTION
- label
- non-UPD guided group
- description
- Conventional colonoscopy would be done without image guidance.
Primary outcomes (1)
- measure
- caecal intubation rate
- timeFrame
- 10minutes in average after starting the procedure
- description
- Caeal intubation is the landmark for complete colonoscopy. Caecal intubation would be documented after each procedure. The caecal intubation rate with or without UPD guidance would be compared. The result would provide information whether the UPD device can faciliate complete colonoscopy.
Eligibility
Eligibility (as posted)
- Sex
- All
- Minimum age
- 18 Years
Show eligibility criteria text
Inclusion Criteria: * Aged 18 years or above * American Society of Anaesthesiologist (ASA) grading I-III * Scheduled for elective colonoscopy Exclusion Criteria: * Previous colonic resection * Refuse to consent to participate * History of allergy to propofol or alfentanil * Has a pacemaker in situ * Pregnant lady
References
Publications (2)
- BACKGROUNDShah SG, Brooker JC, Thapar C, Suzuki N, Williams CB, Saunders BP. Effect of magnetic endoscope imaging on patient tolerance and sedation requirements during colonoscopy: a randomized controlled trial. Gastrointest Endosc. 2002 Jun;55(7):832-7. doi: 10.1067/mge.2002.124097. PMID 12024136
- BACKGROUNDShah SG, Brooker JC, Williams CB, Thapar C, Saunders BP. Effect of magnetic endoscope imaging on colonoscopy performance: a randomised controlled trial. Lancet. 2000 Nov 18;356(9243):1718-22. doi: 10.1016/S0140-6736(00)03205-0. PMID 11095259