Which of the following are correct concerning Induced hypoth…

Which of the following are correct concerning Induced hypothermia?           I.    A six hour waiting period is necessary before instituting induced hypothermia post cardiac arrest II.    To prevent the ischemic tissue injury post hypoxic insult, the body is cooled to 30°C III.   The body is rewarmed to 37°C after a period of seven days IV.   Arterial blood gas results are inaccurate unless the results are temperature corrected