The aim of the study was to evaluate the application of water exchange method to upper endoscopy. We hypothesize that water exchange during upper endoscopy could reduce patient discomfort. The primary outcome will be the patient discomfort score during upper endoscopy. The secondary outcomes will include cleanliness score, techniques adequacy score, findings of the EGD, and willing to repeat the procedure, as well as the patient and endoscopist satisfaction score with the method.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
DIAGNOSTIC
Masking
DOUBLE
Enrollment
250
Upon entering the fundus of the stomach the air button will be turned off. Air pocket and gastric fluids will be removed by suctioning. Distilled water, delivered by a 50-ml syringe in 10ml-to-20 ml increments, will be infused to dislodge debris and air bubbles adhering the gastric mucosa and open the lumen. The infused water will be removed to keep the lumen almost completely collapsed before the scope advance further.
Air will be minimally insufflated and residual fluid suctioned during the entire insertion process. Usually, no water will be infused to cleanse the mucosa until the withdrawal phase.
Dalin Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation
Chiayi City, Taiwan, Taiwan
RECRUITINGDiscomfort during the procedure
A VAS discomfort score (0, no discomfort; 10, most discomfort) graded by the patient,
Time frame: 5 minutes after the procedure
patient satisfaction score
A VAS score (0, not satisfied at all; 10, most satisfied) graded by the patient
Time frame: 5 minutes after the procedure
mucosa cleanliness score
1, no need for irrigation; 4, need more than 50 ml of water irrigation
Time frame: 1 minutes after the procedure
technique adequacy score
1, excellent; 6, very poor
Time frame: 1 minutes after the procedure
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