Brain damage or coma can occur if a patient has oxygen deprivation lasting for:

You respond to a construction site and find a worker lying supine in the dirt. He has been hit by a heavy construction vehicle and flew more than 15' before landing in his current position. There is discoloration and distention of his abdomen about the RUQ. He is unconscious and his respirations are 10 breaths/min and shallow, with noisy gurgling sounds. The correct ventilation rate for assisting this adult patient is:

a. one breath every 5-6 seconds b. one breath every 3-5 seconds c. one breath every 10-12 seconds d. there is no need to assist with ventilations for this patient

Which of the following is true about a HEPA filter?

A) It removes 85% of possible contaminants. B) It removes 90% of possible contaminants C) It removes 95% of possible contaminants. D) It removes 99% of possible contaminants.