Colonoscopy is a sedated procedure traditionally performed using air insufflation during the insertion phase of the procedure. Recently, the use of water method (eg, water infusion or water exchange techniques) during the insertion phase of colonoscopy has been reported to increase the proportion of patients in whom complete unsedated colonoscopy could be achieved, reduce patient recovery time burdens, decrease abdominal discomfort during and after colonoscopy, enhance cecal intubation, and increase willingness to repeat an unsedated colonoscopy. However, there has been no study on the use of water method during the training of primary care doctors or nurse endoscopists in flexible sigmoidoscopy for colorectal cancer screening. In unsedated endoscopic procedure such as FS, endoscope insertion techniques that can potentially reduce patient discomfort and increase the rate of achieving an adequate depth of scope insertion are desirable. Our current study aims to evaluate the impact of water method during insertion phase of FS in the training of primary care doctors or nurse endoscopists for colorectal cancer screening.
Conditions: Colorectal Cancer Screening
Eligibility Criteria
Inclusion Criteria
- Consecutive asymptomatic patients suitable for CRC screening by FS
- Age 50 - 70 years
- Written informed consent available
Exclusion Criteria
- Contraindications for endoscopy due to comorbidities
- Unable to provide written informed consent
- Personal history of polyposis syndrome, personal history of CRC, personal history of inflammatory bowel disease
- Coagulopathy (INR\>1.5) or thrombocytopenia (platelets \<50,000)
- Pregnant patients
Eligibility criteria are kept as the original English records from ClinicalTrials.gov; actual eligibility is determined by the research team's formal assessment and the informed consent form. Source: ClinicalTrials.gov, updated automatically every two weeks. Last synced: 2026年10月8日.