Peroral endoscopy and laryngeal surgery . -bronchial tree of a cadaver, whereasbronchoscopic study of the tree shows that it is not quite in the same FOREIGN BODIES IN AIR AND FOOD PASSAGES. 231 position in the living. The injection prejiarations of comenearer those of the li\ing tree than any other that the author has beenable to find, and therefore he has used them in making the positive method of localization. This method, suggested byDr. John \\. Boyce and perfected by the author is intended primarily forbringing the tube mouth in close relation with a small f
Peroral endoscopy and laryngeal surgery . -bronchial tree of a cadaver, whereasbronchoscopic study of the tree shows that it is not quite in the same FOREIGN BODIES IN AIR AND FOOD PASSAGES. 231 position in the living. The injection prejiarations of comenearer those of the li\ing tree than any other that the author has beenable to find, and therefore he has used them in making the positive method of localization. This method, suggested byDr. John \\. Boyce and perfected by the author is intended primarily forbringing the tube mouth in close relation with a small foreign body thatcannot be found because it is in a minute bronchus of which there aretoo many for each to be searched. In conjunction with the lateral radio-graph the caliper-guide will bring the point of the bronchoscope, after-ward at bronchoscopy, in close relation with the foreign body, therebygreatly diminishing the number of small bronchial tubes to be searched;this method being used, of course, onlv in case of small foreign bodies. Fig. i68. lUustratitiK a positive radinRraphic film of tlic traclico-hroiicliial for overlayincr to assist in localization of a foreign 1)0(ly. The left hand illns-tration shows the lilm laid over a negative of a patient in whose left main hronclmswas a pin. Localization verified by bronchoscopy. The shadow of the pin isstrengthened with ink. which have fallen into a very small bronchus far down or far out nearthe periphery of the lungs. The lateral placement of the point of thebronchoscope depends ujion a m;irk placed on the skin by the radio-grapher who determines the |iiiiin liy an anterior-posterior radiograph(Fig. Ifiti). Value of luuiativc radiography. The negative rejjort from liie radio-grapher remains to-day as it always has been, unreliable, I)ecause manybodies are not opaf|ue to the ray, and. moreover, the foreign body maynot be the same as that of which we get ;i history. In addition to this,even metallic bodies at times
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrespira, bookyear1915
