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Minimal water exchange colonoscopy is theoretically more convenient and faster than water exchange colonoscopy. But few studies compared the differences between the two methods. Therefore, we attempted to evaluate the effect of minimal water exchange colonoscopy prospectively.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| minimal water exchange | Experimental | We suctioned the lumen and infused water by constant pressure on the air-water valve button of the endoscope at the rectum to open the lumen. |
|
| traditional water exchange colonoscopy | No Intervention | The water exchange colonoscopy reached the cecum through continuous infusion and suction of water in the whole colon via an additional flushing pump. |
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| minimal water exchange | Other | Use a new technique, minimal water exchange colonoscopy, which adds the infusion of modest amounts of water by constant pressure on the air-water valve button of the endoscope to achieve intubation. |
| Measure | Description | Time Frame |
|---|---|---|
| VRS-4 pain scores | a 4-point verbal rating scale (VRS-4) with self-explanatory categories (no, slight, moderate, or severe pain). | 30 minutes. |
| Measure | Description | Time Frame |
|---|---|---|
| Adenoma detection rate. | The proportion of patients in whom at least one adenoma is detected. | 40 minutes. |
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Inclusion Criteria:
Exclusion Criteria:
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Ningbo first hospital | Ningbo | Zhejiang | 315010 | China |
We might share our data when all related studies are published, E-mails could be sent to: cenqliu@163.com.
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