Bronchography with dionosil.
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The endotracheal route has been used as a second route of choice for administration of emergency drugs for several years; however, the optimal technique for administration of drugs by this route has not been clearly defined. One important aspect of technique involves the question of how distribution to the distal-most endobronchial tree is influenced by initial depth of endotracheally administered drug instillation and use of forced manual hyperventilation. This study demonstrates that depth of instillation of drugs administered by the endotracheal route may not be an important factor in the delivery of medications to absorptive sites in the lung. It appears, however, that forced manual hyperventilation is essential to assure bilateral and optimal distal delivery of endotracheally administered medications.
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The reactions of seven contrast agents--pure barium sulphate, Micropaque, Gastrografin, Dionosil, Hytrast, Amipaque and Hexabrix--on the bronchi and lungs of rats were studied. This work was undertaken to find a safe gastrointestinal contrast agent for use in post-operative patients where aspiration may be an accompanying risk. Amipaque and Hexabrix produced no significant histological reaction in the lungs and would, therefore, appear to be suitable for use in such cases.