Experimental Pharmacology

Experimental Pharmacology

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1917 edition. Excerpt: ...pointer will descend. If the bronchial muscles contract or dilate the extent of this movement will be correspondingly decreased or increased. The extent of expansion or contraction of the lungs can be controlled by the screw clamp on the tracheal cannula (if the volume of air delivered by the respiration machine at each inflation cannot be independently controlled). The extent of movement of the tambour pointer, i. e., of the amount of air entering or leaving the tambour bowl, can be controlled by the screw clamp on the "inlet" of Fig. 255. If negative pressure is used this is applied only after the dog is pithed (this being determined by the administration of the ether which is better done by positive artificial respiration). Figure 257 shows the way to arrange the tubes to the apparatus. In this case the tube to the recording tambour is attached to the side tube (or better the end) of the tracheal cannula (the ether bottle is removed, for it is no longer necessary as the animal will then be pithed). The other opening of the tracheal cannula carries a piece of rubber tubing and a screw clamp. This clamp is used to regulate the facility with which air passes into and out of the trachea and lungs. This regulates the size of the tambour stroke on the drum. Closing the clamp down increases the amplitude of the tambour stroke; opening the clamp decreases the stroke. The attachment of the tambour here and the removal of the ether bottle can be done only after the animal is pithed. When the apparatus is adjusted pith the animal. To do this consult Figs. 258, 259, 260, 261, and 262. Unfasten the dog's head and turn it on the left side. The anesthetist watches carefully to see that the chest or trachea is not compressed and that the animal gets...
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Product details

  • Paperback | 118 pages
  • 188.98 x 246.13 x 6.35mm | 226.8g
  • Rarebooksclub.com
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236653505
  • 9781236653505