Peroral endoscopic myotomy (POEM) is a well-established third-space endoscopic technique that can be technically challenging when used to treat a cricopharyngeal bar, even for experienced operators, due to the limited working space in the hypopharynx and upper esophageal sphincter [1] [2]. Here we propose the use of saline immersion to improve the technical success rate of the procedure.
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Ramakrishnan et al. (2024) studied this question.
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