. Modern surgery, general and operative. seen in Fig. 616,is thrown from pulmotor to inhalation, and oxygen is then given as shown inFig. 618. In addition to this regular sized pulmotor, there is an iniant pulmotor whichis especially adapted for use in maternity hospitals and by obstetricians. Boththe adult and the infant apparatus have a lever with which the operator canregulate expiration and inspiration at will instead of using the automaticbellows. If the mask fits, the pulmotor works as it should. If it does not fit, it fails. Drowning 979 The mask fits some faces and not others. A great
. Modern surgery, general and operative. seen in Fig. 616,is thrown from pulmotor to inhalation, and oxygen is then given as shown inFig. 618. In addition to this regular sized pulmotor, there is an iniant pulmotor whichis especially adapted for use in maternity hospitals and by obstetricians. Boththe adult and the infant apparatus have a lever with which the operator canregulate expiration and inspiration at will instead of using the automaticbellows. If the mask fits, the pulmotor works as it should. If it does not fit, it fails. Drowning 979 The mask fits some faces and not others. A great need of the instrumentis a certainly and universally adjustable mask. The pulmotor has failed to reach our expectations. Experiments show thatthe air deHvered by the pulmotor does not contain more than 30 per cent, ofoxygen. The positive and negative pressures succeed each other so rapidlythat the lungs are never properly inflated and the reducing valve is very apt toget out of order (Y. Henderson, in Jour. Am. Med. Assoc, 1916, Ixvii).. Fig. 618.—Administration of oxygen after respirations have been established. Artificial Respiration by the Lungmotor.—This apparatus not only furnishesair to the lungs but also causes the thorax to exert the proper suction upon thegreat vessels and heart. This instrument is worked by hand and it can beadjusted to any subject with great rapidity. Before using the instrument atube is inserted into the esophagus. By squeezing a hand bulb a bulb withinthe esophagus is distended so as to block that canal. In this way it is madecertain that air will not enter the stomach instead of the lungs. The mask isthen fastened in place and the air pumps are worked. One makes pressure,the other suction. When the handle is lifted cylinder E (Fig. 619) fills with airdrawn from the lungs and cylinder A with air, with O or with air and O, as maybe desired. When the handle is pushed downward the air or the O mixture isforced into the lungs and the expired air is
Size: 1819px × 1373px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, bookidmodernsurger, bookyear1919
