What is the NFPA Standard on liquid splash-protective clothing for hazardous materials emergencies?

The mechanism of injury in which a patient's chest has struck an immovable object, such as a steering wheel, may most accurately be described as a(n):

A) coup contrecoup injury. B) compression injury. C) open trauma injury. D) penetrating injury.

CPR artifact is caused by chest compressions obscuring the real ________

Fill in the blank(s) with correct word