Peroral endoscopy and laryngeal surgery . ule will stop and remain at least for atime at the site of the foreign body. (Fig. 16:5). This not only showsthat the foreign body is present, but it shows its position, and, further-more, on dissolving of the capsule, the liismuth is beneficial to any trau-matism or esophagitis that may exist in the neighborhood of the for-eign body. In using the Ijismuth capsule, for the detection of a foreignbody not itself opaque to the ray, it is necessary to remember that the IORUIGX BODIES IN AIU AND FOOD PASSAGES. 225 progress downward of a bismuth capsule or a
Peroral endoscopy and laryngeal surgery . ule will stop and remain at least for atime at the site of the foreign body. (Fig. 16:5). This not only showsthat the foreign body is present, but it shows its position, and, further-more, on dissolving of the capsule, the liismuth is beneficial to any trau-matism or esophagitis that may exist in the neighborhood of the for-eign body. In using the Ijismuth capsule, for the detection of a foreignbody not itself opaque to the ray, it is necessary to remember that the IORUIGX BODIES IN AIU AND FOOD PASSAGES. 225 progress downward of a bismuth capsule or any large bolus is not ex-ceedingly rapid and may normally be seen in transit. Still more neces-sary is it to remember that in many cases, with a perfectly normal esoph-agus not containing any foreign body, the capsule may hesitate for amoment at the cricopharyngeus and also at the point where the leftbronchus crosses the esophagus, and again at the hiatus. The author hasnoted in quite a number of cases with an apparently perfectly normal. Fig. 16,3. sliowiiig a mctlii>d of locating a foreign body in the eso-phagus. The bismutli capsule was slopped in the esophagus by a foreign body that,itself, does not show. esophagus that the ridge caused by the crossing of the left bronchus wasundtilv prominent, and this, in one case, was connected directly with alodgment of the bismuth capsule for a few seconds in an esophagus whichdid not contain ri foreign body. In view of this, it would seem to be wisein using the capsule for the diagnosis of foreign bodies not opaque tothe rav to wait two or three minutes after swallowing the capsule before 226 Foreign eddies ix air and food passages. taking a radiograph ; but, of course, the wait must not be sufficiently longto permit of the capsule dissolving. In case of small non-obstructiveforeign bodies the metliod would not be efifective, and in any case is value-less negatively. \\hen positive it may be so from an obstruction other
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrespira, bookyear1915
