首页> 美国政府科技报告 >The Effects of Three Vaporizable Fire Extinguishing Agents on Myocardial Metabolism and Cardiovascular Dynamics in the Anesthetized Dog.
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The Effects of Three Vaporizable Fire Extinguishing Agents on Myocardial Metabolism and Cardiovascular Dynamics in the Anesthetized Dog.

机译:三种可蒸发灭火剂对麻醉犬心肌代谢和心血管动力学的影响。

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摘要

Thirty-four mongrel dogs were divided into 5 groups: (1) 6 O2 controls; (2) 8 exposed to 27-75% CBrF3 in O2; (3) 4 exposed to 27-75% N2 in O2; (4) 9 exposed to 4-12% bromochlorodifluoromethane in O2; and (5) 7 exposed to 0.3-1.0% chlorobromomethane in O2. Dogs were anesthetized and instruments for cardiovascular dynamic and myocardial metabolic monitoring through thoracotomies were implanted. Thirty-eight variables reflecting cardiovascular dynamics and myocardial metabolism were monitored before, during, and after 45-min exposures to the respective compounds. The most significant observation was the elevation of the coronary sinus blood PO2 and O2 content during exposure to CBrClF2 or CH2BrCl. Both of these variables increased in magnitude progressively during the exposures. The persistence of the effect postexposure was greater for CBrClF2 than for CH2BrCl. Exposure to CBrF3, CBrClF2, or CH2BrCl may result in disturbances of myocardial energy metabolism that are connected to myocardial performance.

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