Backgrounds and Aims

Delayed gastric transit of the capsule may lead to incomplete small bowel examination, reducing the diagnostic yield. Thus, this study was designed to determine if magnetic steering could enhance capsule gastric emptying and mucosal visualization within the duodenum.

Methods

The intervention group comprised 100 patients undergoing magnetic-controlled capsule endoscopy between May to September 2017 in whom magnetic control was used to assist transpyloric passage of the capsule and duodenal inspection. A cohort of 100 patients who had undergone the procedure before May 2017 was randomly selected from the database as an historic control group in whom transpyloric movement of the capsule occurred spontaneously (without magnetic assistance). The difference in the pyloric transit time (PTT) and duodenal papilla detection rate (DPDR) between the 2 groups were compared, and related factors were also investigated.

Results

Transpyloric passage of the capsule under magnetic control was successfully performed in 59 patients (59%). Median PTT was greatly reduced in the intervention group from 58.38 minutes (range, 13.45-87.47) to 4.69 minutes (range, 1.56-55.00; P < .001), and DPDR was also greatly improved with magnetic steering (30.5% vs 9%, P < .001). Magnetic steering, male gender, and higher body mass index were independently associated with reduced gastric transit time and magnetic steering with an enhanced DPDR.

Conclusions

Magnetic steering of the capsule can enhance gastric emptying of the capsule and may prove useful in nonobese and female patients who appeared to have longer gastric transit time and achieved a better DPDR than that under the action of peristalsis alone. (Clinical trial registration number: NCT03441945.)

中文翻译：

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电磁转向对胶囊内窥镜检查胃运输时间的影响（带视频）

背景和目标

胶囊的胃运输延迟可能会导致小肠检查不完全，从而降低诊断率。因此，本研究旨在确定磁力转向是否可以增强十二指肠内的胶囊胃排空和粘膜可视化。

方法

干预组包括100名在2017年5月至2017年9月期间接受磁控胶囊内镜检查的患者，其中使用磁控制辅助胶囊经幽门幽门通过和十二指肠检查。从数据库中随机选择一组100例于2017年5月之前接受过该手术的患者作为历史对照组，在该对照组中，该囊膜自发发生幽门运动（无磁辅助）。比较两组幽门渡渡时间（PTT）和十二指肠乳头检出率（DPDR）的差异，并调查相关因素。

结果

在59例患者（59％）中，在磁性控制下成功进行了胶囊的经幽门穿刺。干预组中的PTT中位数从58.38分钟（范围13.45-87.47）大大减少到4.69分钟（范围1.56-55.00; P  <.001），并且磁性转向的DPDR也大大改善（30.5％vs 9％） ，P  <.001）。电磁转向，男性性别和更高的体重指数与胃运输时间的缩短和DPDR增强的电磁转向独立相关。

结论

胶囊的电磁转向可以增强胶囊的胃排空，并且对于似乎比单独在蠕动的情况下具有更长的胃通过时间并获得更好的DPDR的非肥胖和女性患者可能有用。（临床试验注册号：NCT03441945。）