the procedure of ohp for co poisoning was designed by the co elimination rate in the dog , assuming it to be the same as that in the human , for the patients of three levels of severity fo co poisoning : phase i is breathing of 2.8 ata o2 for 20 minutes , usually for the patients of each level of severity , then phase ii ( breathing of 1.9 ata o2 ) follows after that for severe poisoning ( cohb in the blood , 80 % ) for 57 minutes , for medium poisoning ( cohb , 60 % ) for 46 minutes and for light poisoning ( cohb , 40 % ) for 32 minutes .
C0007020
co
C0030054
o2