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KMID : 0351619700110010213
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Kyungpook Medical Journal
1970 Volume.11 No. 1 p.213 ~ p.219
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Abnormal Breathing Observed in Hypoxic Dogs and Effects of Vagotomy on the Breathing
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李重吉/Lee, Joong Kil
徐錫完/金亨洙/呂雄淵/Suh, Suk Wan/Kim, Hyung Soo/Ryo, Ung Yun
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Abstract
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A peculiar abnormal breathing vas observed in dogs anesthetized with the thiopental when the animal was under hypoxic condition or was given booster doses of thiopental. The characteristics of the abnormal breathing was one to three times of rapid and shallow (tidal volcane, 80150 ml) breathing developed after the normal inspiration (200250 ml) and the abnormal breathings, one to few short breathings, was followed by a normal expiration. (Figure 2. )
Effects of vagotomy on the breathing in hyperpneic or hypopneic dogs were also studied in present paper. Both side cervical vagotomy was done in hyperpneic dogs, rebreathing low O₂or CO-0~ gas mixture, and in hypopneic dof;s inwhich respiration was markedly suppressed by booster doses of intravenous thiopental injection.
After the vagotomy, respiratory rate was more remarkably decreased in hyperpneic dogs than in hypopneic dogs. The tidal volume was doubled by the vagotomy in both hyperpneic and hypopneic dogs. The minute ventilation was depressed significantly following the vagotomy in hyperpneic dogs while no change was found in hypopneic dogs after the vagotomy.
Authors were impressed, considering above described results, that the extent of change in the respiration following the vagotomy is closely related to the respiratory condition of the animal at the experiment.
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