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Following a Mason operation/bariatric surgery, a 47−year−old woman experi− enced vomiting due to tight pylorospasm. Balloon dilations led to transient sympto− matic improvement; however the pylor− ospasm recurred. After the patient had given informed consent, we injected 25 U of botulinum toxin into each quadrant of the prepyloric antrum [3]. Then, with the intention of monitoring the relaxation of the pylorus, we carried out the following procedure, with the patient under general anesthesia. A video capsule was fixed to the tip of an enteral feeding tube (Fig− ure 1). A small wire loop and a long wire were fixed at the proximal and distal ends, respectively, of what was now termed the “capsule−probe.“ Using a biop− sy forceps, the long wire was externalized at the proximal end of the operative chan− nel of a video gastroscope (Olympus XP 160, 5.9 mm) and attached to its handle. The capsule−probe was introduced orally, parallel to the video gastroscope, and then unbound from it. The video gastro− scope was reintroduced through a nostril, so that the small proximal wire loop could be grasped with the biopsy forceps, al− lowing the capsule−probe to be externa− lized via this nostril. The capsule−probe was fixed in place when the video capsule was facing the area of interest, as checked with the video gastroscope. Finally, the patient was connected to the recording system. The recording provided by the capsule−probe allowed observation of transient pyloric openings.

A Video Capsule Attached to a Probe Can Be Used for Prolonged Stationary Endoscopic Monitoring