The art of anaesthesia . Fig. 55.—Sylvester method of artificial respiration, first position. Positive ventilation by intrapharyngeal insufflation isnot quite so efficient. Air delivered into the pharynx es-capes in four directions: into the mouth, into the nose, intothe oesophagus and stomach, and into the trachea. Everyexit but the tracheal must be shut off. The mouth may beclosed by a strip of adhesive plaster fastened at one endunder the chin and at the other to the forehead. Escapethrough the nose is controlled by the presence of the nasal 94 ANESTHESIA tubes (Figs. 83 and 86) through whi
The art of anaesthesia . Fig. 55.—Sylvester method of artificial respiration, first position. Positive ventilation by intrapharyngeal insufflation isnot quite so efficient. Air delivered into the pharynx es-capes in four directions: into the mouth, into the nose, intothe oesophagus and stomach, and into the trachea. Everyexit but the tracheal must be shut off. The mouth may beclosed by a strip of adhesive plaster fastened at one endunder the chin and at the other to the forehead. Escapethrough the nose is controlled by the presence of the nasal 94 ANESTHESIA tubes (Figs. 83 and 86) through which the air is beingdelivered. Accumulation of air in the stomach is preventedby placing a heavy weight (twenty pounds) on the abdo-men and strapping this in position. The operator may siton the abdomen if a weight is not available. If artificialrespiration must be carried on during a laparotomy, astomach tube should be passed and left in situ. This will. Fig. 56.—Sylvester method of artificial respiration, second position. dispose of air which may accumulate in the stomach. Theabdomen being open the operator may make manual press-ure on the stomach, thus preventing its distention. Pressure on the abdomen per se tends to overcome thecirculatory shock which is present. In addition to both negative and positive ventilation,inversion is frequently beneficial. The patient, eventhough full grown, is hung with the head down and swung THE SIGNS OF ANESTHESIA 95 to and fro for some moments. Such treatment by increas-ing the cerebral circulation is often of decided benefit. The Lewis Pendulum Swing (Fig. 58) is carriedout as follows: The patient should be suspended by thefully flexed knees and swung forcibly from side to side fora period of from one to two minutes. Except with children,it is necessary for the operator to stand upon a box or otherelevation sufficiently high to allow of a free swing. The to patient
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectanesthe, bookyear1919
