Use of a Magnetically Assisted Capsule Device for Examining the Esophagus
Prateek Sharma, MD, FASGE, reviewing Beg S, et al. Gastrointest Endosc 2020 Apr.
The magnetically assisted capsule endoscopy (MACE) system (MicroCam Navi; IntroMedic) is a novel noninvasive technique for visualizing the upper GI tract. This device utilizes a magnetic capsule manipulated by an external handheld magnet.
This prospective single-blind study was conducted to address the accuracy of MACE for the diagnosis of esophageal lesions. A total of 50 patients (17 with Barrett’s esophagus [BE], 17 with esophageal varices [EV], and 16 controls with neither) were enrolled, and 47 successfully completed both MACE and upper endoscopy. MACE was able to diagnose 11 of the 15 patients with EV (sensitivity, 73.3%; specificity, 100%) and 15 of the 16 patients with BE (sensitivity, 93.8%; specificity, 100%). Successful esophageal capture (esophageal transit time >30 seconds) was documented in 68% of patients, with a nonsignificant trend toward increased transit time with increased operator experience. Compared to upper endoscopy, patients reported less discomfort with MACE and chose it as a preferred diagnostic modality. No adverse events were reported in either group.
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Beg S, Card T, Warburton S, et al. Diagnosis of Barrett’s esophagus and esophageal varices using a magnetically assisted capsule endoscopy system. Gastrointest Endosc 2020;91:773-781.e1. (https://doi.org/10.1016/j.gie.2019.10.031)