Abstract
We who work in the chest service of Barnes Hospital agree with others who regard bronchography as a method which has revolutionized the diagnosis of pulmonary conditions. Since the introduction of iodized oil 40 per cent, as suggested by Sicard and Forestier, we have been able to perform lung mapping without any danger to the patient and with most gratifying results in diagnosis. There are seven methods of introducing iodized oil: (1) Through a trocar needle, resembling a tracheotomy tube, into the trachea, under sterile precautions. (2) Under direct laryngoscopic examination with the patient lying on the back, with the head extended over the table. (3) Through the bronchoscope introduced directly into the lung. (4) Through a tracheal catheter introduced under indirect illumination of the larynx. (5) Through the passage of a specially constructed intubation tube. (6) Passive method of aspiration. After complete anesthesia of tonsillar pillars and trachea, the
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