Up to now, many studies has showed that compared with air insufflation colonoscopy, water-related colonoscopy could shorten the cecal intubation time and relieve the pain of the patients,especially for training the beginners,the investigators conduct this study to preform the "air assisted" water injection colonoscopy in experienced endoscopists.
In order to further develop water skills and apply the water assisted colonoscopy technique more flexibly, the investigators designed this study.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
DIAGNOSTIC
Masking
DOUBLE
Enrollment
600
Air is inflated into the bowel to help searching the cavity while advancing the colonoscope until reaching the cecum.
Water was injected through the working channel instead of air to follow the intestinal cavity until reaching the caecum .
Cut off air inflating before examination. Water was injected through the working channel to follow the intestinal cavity until reaching the splenic flexure, small amount of air inflating could be given to help searching the cavity until reaching the cecum.
The 1st Affiliated Hospital of Harbin Medical University
Harbin, Heilongjiang, China
RECRUITINGThe success rate of the cecal intubation
Time frame: This will be calculated after the completion of the whole trial,which is about 2 months
The cecal intubation time(min)
Time frame: This will be collected at their procedure appointment which is expected to be 2 to 3 hours in length
The time to reach the splenic flexure(min)
Time frame: This will be collected at their procedure appointment which is expected to be 2 to 3 hours in length
VAS abdominal pain score
Time frame: Data collected usually within 10minutes post procedure
The frequency of the colonoscope shortening maneuver while advancing the colonoscope
Time frame: This will be collected at their procedure appointment which is expected to be 2 to 3 hours in length.
Length of colonoscope at time of cecal intubation(cm)
Time frame: This will be collected at their procedure appointment which is expected to be 2 to 3 hours in length.
Volume of water used during water colonoscopy(ml)
Time frame: This will be collected at their procedure appointment which is expected to be 2 to 3 hours in length.
General data of the patients recruited-age
Time frame: Data collected usually within 10minutes post procedure .
General data of the patients recruited-gender
Time frame: Data collected usually within 10minutes post procedure .
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General data of the patients recruited-BMI
Time frame: Data collected usually within 10minutes post procedure .
General data of the patients recruited-abdominal or pelvic surgery history
Time frame: Data collected usually within 10minutes post procedure .
General data of the patients recruited-bowel preparation
Time frame: Data collected usually within 10minutes post procedure .
The McGill pain evaluation of the abdominal pain
Time frame: Data collected usually within 10minutes post procedure