adenoma
Conditions
Interventions
Group 1:second colonoscopy
Sponsors
The Eighth Affiliated Hospital of Sun Yat-Sen University
Eligibility
Sex/Gender
All
Age
50 Years to No maximum
Inclusion criteria
Inclusion criteria: 1.Male or female with aged >= 50 years; 2.Ability to read, understand and sign informed consent; 3.The investigator believes that subjects can understand the process of the clinical study, are willing and able to complete all study procedures and follow-up visits, and cooperate with the study procedures.
Exclusion criteria
Exclusion criteria: 1. Drug or alcohol abuse or psychological disorder in the past 5 years; 2. Pregnant or lactating women; 3. Known patients with multiple polyposis syndrome; 4. Patients with known inflammatory bowel disease; 5. Known intestinal stenosis or space-occupying tumor; 6. Known colon obstruction or perforation; 7. Patients with a history of colorectal surgery; 8. Patients with a history of allergy to pre-used antispasmodics; 9. Biopsy and polyp removal cannot be performed due to coagulation disorders or oral anticoagulants.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Mis-detection rate of >=5mm adenoma; | — |
Secondary
| Measure | Time frame |
|---|---|
| The economic costs of every case colonoscopy;Missed detection rate of polyps (PMR);Average number of missed adenomas per patient;Average number of missed polyps per patient;Missed detection rate of large, small and micro adenomas;The missed detection rate of large, small and micro polyps;Different parts of the miss rate of adenoma;Miss rate of the different parts of the polyp;Duration of withdrawal;Endoscopy of bowel preparation for evaluation;Endoscopy of bowel preparation for evaluation;Rinse, sputum suction time; | — |
Countries
China
Contacts
Public ContactChen Honglei
The Eighth Affiliated Hospital, Sun Yat-Sen University
Outcome results
None listed