Which of the following statement(s) is/are true concerning carbon monoxide and cyanide exposure?
A.	A normal oxygen saturation by standard transmission pulse oximetry precludes the possibility of significant carboxyhemoglobinemia
B.	Most patients with cyanide exposure require administration of sodium thiosulfate
C.	The half-life of carbon monoxide is reduced by a factor of 5 with ventilation with 100% oxygen
D.	Even if fire victims are well ventilated with high concentrations of oxygen by emergency response personnel from the time of extrication, carboxyhemoglobin values are frequently greater than 10% on initial evaluation
Answer:C
Which of the following statement(s) is/are true concerning carbon monoxide and cyanide exposure?
A.	A normal oxygen saturation by standard transmission pulse oximetry precludes the possibility of significant carboxyhemoglobinemia B.	Most patients with cyanide exposure require administration of sodium thiosulfate C.	The half-life of carbon monoxide is reduced by a factor of 5 with ventilation with 100% oxygen D.	Even if fire victims are well ventilated with high concentrations of oxygen by emergency response personnel from the time of extrication, carboxyhemoglobin values are frequently greater than 10% on initial evaluation