The art of anaesthesia . is ideal for head andneck work and is the one of choicewhere the operation is not in the oralcavity. When rebreathing is not desiredthe following simple method for thesource of ether vapor may be usedfor both pharyngeal and nasal ether can is opened and are then punched in the top ofthe can with bandage scissors so thata condition resembling Fig. 77 ob-tains. Half an ounce of ether is thenpoured into the can and the tubethrough which the patient breathesand which is connected at its proxi-mal end either to the nasal tube or tothe pharyngeal tube
The art of anaesthesia . is ideal for head andneck work and is the one of choicewhere the operation is not in the oralcavity. When rebreathing is not desiredthe following simple method for thesource of ether vapor may be usedfor both pharyngeal and nasal ether can is opened and are then punched in the top ofthe can with bandage scissors so thata condition resembling Fig. 77 ob-tains. Half an ounce of ether is thenpoured into the can and the tubethrough which the patient breathesand which is connected at its proxi-mal end either to the nasal tube or tothe pharyngeal tube is slipped overthe top of the ether can. The patient now breathes inand out through the holes punched in the ether increase the concentration of the ether vapor breathedthe can is shaken, gauze is placed over the holes, and theflat of the hand grasps it firmly, thus imparting heat whichhastens vaporization. When rebreathing is desired the following adaptationof the authors closed drop gas ether apparatus will be. Fio. 77.—The authors tin canmethod. ETHER ANESTHESIA 149 found satisfactory. With this method the oral will befound more satisfactory than the nasal route, because ofthe greater tidal volume permitted. When good muscularrelaxation is secured, the face piece, consisting of rubbercushion and celluloid mask is removed by unscrewing asingle nut. The distal end of the pharyngeal tube is thenslipped over all and a condition as shown in Fig. 79 obtains. In practice this method yields complete control forrebreathing, and pure oxygen gas may be used at will. The disadvantages of intrapharyngeal inhalation areas follows: It is not suitable for small children. It requires close attention, for it does not give a con-stant but a variable maintenance. Its use implies familiarity with general anaesthesia. It requires preliminary morphine and atropine. The advantages of intrapharyngeal inhalation are asfollows: It is ideal for military surgery. Available for all head and nec
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectanesthe, bookyear1919
