窒息性气体中毒的预防
作者[孙锡云] 发表于[2010-12-1 23:39:00]
窒息性气体中毒的预防
窒息性气体是指经吸入使机体产生缺氧而直接引起窒息作用的气体，这类气体可使全身组织细胞得不到氧气或不能利用氧气，结果导致组织细胞损伤。首先是神经系统受损。中毒后的临床表现可以是多个系统受损的结果，但以神经系统症状最为突出。
常见的窒息性气体有一氧化碳、硫化氢、氰化氢、甲烷等。这些化合物进入机体后导致的组织细胞缺氧各不相同。一氧化碳进入体内后主要与红细胞的血红蛋白结合，形成碳氧血红蛋白，以致使红细胞失去携氧能力，从而组织细胞得不到足够的氧气。氰化氢进入机体后，氰离子直接作用于细胞色素氧化酶，使其失去传递电子能力，结果导致细胞不能摄取和利用氧，引起细胞内窒息。
甲烷本身对机体无明显的毒害，其造成的组织细胞缺氧，实际是由于吸入气中氧浓度降低所致的缺氧性窒息。硫化氢进入机体后的作用是多方面的。硫化氢与氧化型细胞色素氧化酶中的三价铁结合，抑制细胞呼吸酶的活性，导致组织细胞缺氧硫化氢可与谷胱甘肽的巯基结合，使谷胱甘肽失活，加重了组织细胞的缺氧另外，高浓度硫化氢通过对嗅神经、呼吸道黏膜神经及颈动脉窦和主动脉体的化学感受器的强烈刺激，导致呼吸麻痹，甚至猝死。
窒息性气体中毒预防的原则：严格遵守操作规程，加强个人防护，普及自救、互救知识；进入危险区工作时，要首先测量空气中窒息性气体和氧气的浓度，确保符合国家规定的职业接触限值，并佩带符合现场环境要求的防护器，在陪护人员的监视下方可进入。
关键词：
中毒 气体中毒 中毒 气体中毒
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http://www.iciba.com/%E8%87%B3%E5%B0%9A%E5%B9%B3%E5%8F%B0%E5%88%86%E5%88%86%E5%BD%A9%E9%9D%A0%E8%B0%B1%E5%90%97%2B952499%28Q%29fjn
http://www.iciba.com/%E8%87%B3%E5%B0%9A%E5%B9%B3%E5%8F%B0%E5%9C%B0%E5%9D%80%2B952499%28Q%29kcf
http://www.iciba.com/%E8%87%B3%E5%B0%9A%E6%97%B6%E6%97%B6%E5%BD%A9%E5%9C%B0%E5%9D%80%2B952499%28Q%29imquy
http://www.iciba.com/%E8%87%B3%E5%B0%9A%E6%97%B6%E6%97%B6%E5%BD%A9%E5%B9%B3%E5%8F%B0%E5%9C%B0%E5%9D%80%2B952499%28Q%29quy
原创
作者[原创(游客)] 发表于[2016-9-30 14:50:31]
http://rywydx.lofter.com/post/1e6a68e3_c80d1bd http://rywywj.lofter.com/post/1e6a80c3_c824283 http://rywywj.lofter.com/post/1e6a80c3_c8219fd http://njryw168.lofter.com/post/1e6983e5_c7e8aee http://rywydx.lofter.com/post/1e6a68e3_c80f6e6 http://njryw168.lofter.com/post/1e6983e5_c7f2e10 http://rywywj.lofter.com/post/1e6a80c3_c8211c9 http://njryw168.lofter.com/post/1e6983e5_c7f0029 http://rywkdks.lofter.com/post/1e698063_c7f7af6 http://njryw168.lofter.com/post/1e6983e5_c7f080a
原创
作者[原创(游客)] 发表于[2016-9-28 20:10:07]
http://ywjseo.lofter.com/post/1e634752_c64fcdc http://wztgywj.lofter.com/post/1e65f473_c6edcd3 http://bjseoywj.lofter.com/post/1e66bf3e_c710a98 http://wztgywj.lofter.com/post/1e65f473_c6ea07f http://bjseoywj.lofter.com/post/1e66bf3e_c70f746 http://wztgywj.lofter.com/post/1e65f473_c6f0eef http://bjseoywj.lofter.com/post/1e66bf3e_c71056c http://wztgywj.lofter.com/post/1e65f473_c6ef756 http://ywjseo.lofter.com/post/1e634752_c64fffe http://bjseoywj.lofter.com/post/1e66bf3e_c710718
原创
作者[原创(游客)] 发表于[2016-9-6 20:33:12]
http://njryw2016.lofter.com/post/1e59a72f_c385b53 http://njryw2016.lofter.com/post/1e59a72f_c385b52 http://njryw2016.lofter.com/post/1e59a72f_c385b51 http://njryw2016.lofter.com/post/1e59a72f_c385b50 http://njryw2016.lofter.com/post/1e59a72f_c385b4f http://njryw2016.lofter.com/post/1e59a72f_c385b4e http://njryw2016.lofter.com/post/1e59a72f_c385b4d http://njryw2016.lofter.com/post/1e59a72f_c385b4c http://njryw2016.lofter.com/post/1e59a72f_c385b4b http://njryw2016.lofter.com/post/1e59a72f_c385b4a
