Abstract
Introduction
Prior studies show promising results of the gastric peroral endoscopic pyloromyotomy (G-POEM) procedure for treatment of refractory gastroparesis. One major technical challenge involved in this procedure is identifying the pyloric muscular ring (PMR). The aim of this study is to establish a reliable method for identification of the PMR during G-POEM.
Methods
Fluoroscopy-guided G-POEM was performed by placing an endoclip at the 9 to 11’o clock position at the pylorus for identification of PMR. Conventional G-POEM was performed by observation of blue colored mucosa at the pylorus area as an indirect marker for PMR. The degree of the PMR identification was graded into well identified, identified, and not identified based on the appearance of the PMR. Procedure times were accurately documented. Gastroparesis cardinal symptoms index and gastric emptying scintigraphy were evaluated before and after the procedure.
Results
Fourteen patients were studied, seven underwent fluoroscopy-guided G-POEM, and seven patients underwent conventional G-POEM. All procedures achieved technical success and no adverse events occurred. In the seven patients who underwent fluoroscopy-guided G-POEM, the PMR was well identified in four patients and identified in three patients. In the seven patients who underwent conventional G-POEM, the PMR was identified in four patients and not identified in three patients. The average time to complete the fluoroscopy-guided G-POEM was significantly shorter than that of the conventional G-POEM.
Conclusions
Fluoroscopy-guided G-POEM by placement of an endoclip at the pylorus was a reliable and safe method to direct the orientation of the submucosal tunnel, to facilitate the location of the PMR, and to shorten the procedure time.
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HB Xue, HZ Fan, XM Meng wrote the first draft and revised the manuscript; S Cristofaro, XL Fu, SH Zhan revised the manuscript; P Mekaroonkamol revised the manuscript, made the tables, and performed statistical analysis; S Dacha revised the manuscript and made the figure; LY Li revised the manuscript and edited the video; Q Cai performed all procedures, designed the study, and revised the manuscript.
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HB Xue MD, HZ Fan MD, XM Meng MD, S Cristofaro P Mekaroonkamol, MD S Dacha, MD, LY Li MD, XL Fu MD, SH Zhan MD, Q Cai MD, have no have no conflicts of interest or financial ties to disclose.
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Xue, H.B., Fan, H.Z., Meng, X.M. et al. Fluoroscopy-guided gastric peroral endoscopic pyloromyotomy (G-POEM): a more reliable and efficient method for treatment of refractory gastroparesis. Surg Endosc 31, 4617–4624 (2017). https://doi.org/10.1007/s00464-017-5524-y
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DOI: https://doi.org/10.1007/s00464-017-5524-y