当前位置： SCI文献检索 > GASTROINTESTINAL ENDOSCOPY期刊下所有文献 > Endoscopic magnet placement into subadventitial tunnels for augmenting the lower esophageal sphincter using submucosal endoscopy: ex vivo and in vivo study in a porcine model (with video).

Endoscopic magnet placement into subadventitial tunnels for augmenting the lower esophageal sphincter using submucosal endoscopy: ex vivo and in vivo study in a porcine model (with video).

Abstract：

BACKGROUND AND AIMS:Endolumenal therapies serve as a treatment option for GERD. This study aimed to determine if magnets could be placed endoscopically using the adventitial layer to create a subadventitial space near the esophagogastric junction to augment the lower esophageal sphincter using submucosal endoscopy. METHODS:This study consisted of 2 phases, ex vivo and in vivo, with domestic pig esophagus. A long submucosal tunnel was made at the mid to lower esophagus. The muscularis propria was incised by a needle-knife within the submucosal tunnel. A subadventitial tunnel was made by biliary balloon catheter blunt dissection, and a magnet was deployed in the subadventitial space. The same maneuver was done within the opposing esophageal wall, with magnet placement in the opposing subadventitial space. RESULTS:Submucosal tunnels and subadventitial tunnels were successful without perforation ex vivo in all attempts and in 9 of 10 cases, respectively. Magnets were deployed in the subadventitial space in 7 cases. Magnets connected and separated with atraumatic endoscope passage into the stomach and reconnected when the endoscope was withdrawn under fluoroscopy in 5 of 7 cases (71.4%). In vivo submucosal tunnels and subadventitial tunnels were successful in all 5 cases, and magnet augmentation was functionally active in 4 cases (80%). CONCLUSION:Subadventitial tunnels were feasible and could represent a new working space for endoscopic treatment. Endoscopic placement of magnets within the subadventitial space may be an attractive alternative endolumenal therapy for GERD.

journal_name

Gastrointest Endosc

journal_title

Gastrointestinal endoscopy

authors

Dobashi A,Wu SW,Deters JL,Miller CA,Knipschield MA,Cameron GP,Lu L,Rajan E,Gostout CJ

doi

10.1016/j.gie.2018.09.015

subject

Has Abstract

pub_date

2019-02-01 00:00:00

pages

422-428

issue

2

eissn

0016-5107

issn

1097-6779

pii

S0016-5107(18)33069-4

journal_volume

89

pub_type

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