Water injection colonoscopy has been a generally accepted method in training the beginners of colonoscopy for its low pain and less cecal intubation time, we would conduct this study to investigate more advantages of this method and make most use of it for beginners' training.
Colonoscopy is the gold standard for diagnosing the large bowel diseases, caecum intubation is the success of the colonoscopy, although with the progress of the function and the technique, for most patients, when facing with inexperienced examiners, conventional air insufflation colonoscopy is still a painful experience. Despite of the application of the technique of abdomen compression, position change of the patients and the sedatives or analgesics, to master well of the colonoscopy for the first-learners still needs much practice. 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 effect was notable, but the present researches on water assisted technique has still been confined to following aspects:1.Water infusing was based on air insufflation; predetermined amount of water was infused ,and water was infused while passing through certain segment of the bowel(such as the left half of colon) ; 2.When training the first-learners, certain dose of sedatives or analgesics was injected; 3.The patients recruited were less. Colonoscopies in this study would be performed by in-training examiners, water would be injected completely instead of air insufflation while advancing the colonoscope, the amount of the water infused would not be predetermined but vary from individuals, and all the patients would be examined without any sedatives or analgesics.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
DIAGNOSTIC
Masking
DOUBLE
Enrollment
300
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.
The Gastroenterology Department of The 1st Affiliated Hospital of Harbin Medical University
Harbin, Heilongjiang, China
RECRUITINGThe success rate of the cecal intubation within 15 min(%)
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 .