Abstract
Objective To improve the ingestion protocol of esophageal capsule endoscopy in right lateral supine （RLS） position. Methods A total of 53 patients were randomized into RLS group and improvement group. The time of passing the esophagus, visual range and clarity of esophagus and z-line, and comfort of the procedure were compared between the two groups. Results The time of capsule passing the esophagus in improvement group was significantly longer than that in RLS group [ 202 （20-480） s vs.63 （8-210） s, P ＜ 0. 001 ） ]. The range of visualization in esophagus （2. 69 ± 0. 21 ） and Z-line （2. 54 ±0. 22） in improvement group was significantly larger than that in RLS group （2. 55 ± 0. 23 and 2. 40 ± 0. 24,respectively, P =0. 019 and P =0. 037, respectively）. No significant difference was detected in clarity of esophagus or Z-line between 2 groups （P ＞0. 05）. Two patients （7.7%） in RLS group had transient cough due to frequent water drinking, while no cough was observed in improvement group. Conclusion Compared with the ingestion protocol of esophageal capsule endoscopy in right lateral supine position, the improved ingestion protocol shows larger range of visualization, better safety and the same definition. Key words: Capsule endoscopy; Esophagus; Methods
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