Magnetically controlled capsule endoscopy (MCE) is now widely used all over the world. However, the standard gastric preparation method by dimethicone we used clinically still has mucus at the bottom of the stomach. In this study, we aimed to determine whether pronase granules is helpful to improve the cleanliness of gastric mucosa in MCE.
As a non-invasive and well-tolerated gastrointestinal examination method, magnetically controlled capsule endoscopy (MCE) is being increasingly used in different populations in recent years. Gastric preparation is extremely important for the completion rate (CR), image quality, and diagnostic efficiency because of the plica of gastric mucosa and the autonomous movement of the capsule in the gastrointestinal tract. After a series of explorations including air-producing powder, defoamer, protease preparation, patients are asked to drink about 800 ml-1000 ml water in a short time for standard gastric filling. However, the existing problems of gastric preparation such as abdominal distension, insufficient gastric filling, and long gastric retention time deserve attention. Different from the results of Zhu et al. (DLD, 2017), the current clinical experience shows that the addition of pronase granules in gastric preparation can often reduce the mucus in the stomach. But the standardized use of pronase granules remains to be further explored.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
DIAGNOSTIC
Masking
TRIPLE
Enrollment
290
Drink Deyo with 200ml warm water 25 minutes before swallowing the capsule to remove mucus in the stomach.
Changhai Hospital
Shanghai, Shanghai Municipality, China
RECRUITINGGastric Cleanliness Score (GCS)
Six primary anatomical landmarks of the stomach (cardia, fundus, body, angulus, antrum, and pylorus) were recorded for evaluation. A 4-point grading scale was introduced to define the cleanliness as excellent (no adherent mucus and foam: score 4), good (mild mucus and foam but do not obscure vision: score 3), fair (considerable amount of mucus or foam present precluding a completely reliable examination: score 2) and poor (large amount of mucus or foam residue needing water to clear it: score 1). GCS was the total scores of all six landmarks, ranging from 6 (completely unprepared) to 24 (perfect). GCS of≥18 was regarded as acceptable.
Time frame: 2 weeks
Visualization of the small bowel Visualization of the small bowel Visualization of the small bowel Visualization of the small bowel Visualization of the small bowel
Visualization of the small bowel was determined by the percentage of time during which the small-bowel view was clear, defined as not obscured more than 50% of the screen view. The clear-viewing percentage of the total small bowel transit time assessed by a 4-point scale :0, less than 25%; 1, 25% to 49%; 2, 50% to 75%; and 3, greater than 75%.
Time frame: 2 weeks
Fullness score
Fullness is the subjective feeling of patients assessed with visual analogue scale (VAS). VAS typically take the form of a straight line with two extreme states anchored at either end. In this study, it is a 100mm VAS with a question"How full do you feel?"anchored with "not at all full"at the left side and "as full as I have ever felt" at the right side. Patients will be asked to mark their feelings on the line. The distance (mm) between the far left and the marked point is the score of fullness. 0 represents no perception at all, 10 indicates pain and needs to be stopped immediately.
Time frame: 2 weeks
Gastric Examination Time (GET)
The time taken for the gastric examination to the endoscopist's satisfaction.
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Time frame: 2 weeks
Esophageal transit time (ETT)
The time between the first image of esophagus and the first image of stomach.
Time frame: 2 weeks
Gastric transit time (GTT)
The time between the first image of stomach and the last image of stomach.
Time frame: 2 weeks
Small bowel transit time (SBTT)
The time between the last image of stomach and the image of ileocecal valve.
Time frame: 2 weeks
Completion Rate (CR)
The completion of stomach was defined as the observation of cardia, fundus, body, angulus, antrum and pylorus and the completion of small bowel examination was defined as the ileocecal valve was photographed.The completion rate in each group was defined as the percentage of patients with a complete examination out of the total number of patients examined.
Time frame: 2 weeks
Adverse events occurence rate
The safety were evaluated at two week after procedure for any adverse events such as infection, pain, nausea, vomiting and capsule impaction or retention.
Time frame: 2 weeks
Detection rate of lesions
The detection rate of lesions in different digestive part (esophagus, stomach, duodenum, small intestine) found by MCE.
Time frame: 2 weeks