Final answer:
Moving an injured person at a crash site is only justified if there is an immediate threat to their life, and is not justified simply 'to Stop moving and become stationary till it passes by'. Medical imaging such as MRI or CT scans are irrelevant at the crash site. In emergencies with severe bleeding, universal donor blood (type O negative) is used when there's no time for blood typing.
Step-by-step explanation:
When considering whether or not to move an injured person at a crash site, the decision should be made based on urgent safety concerns and the potential for further harm. Typically, moving an injured person is only justified if there is an immediate threat to their life, such as a fire or the risk of explosion. Situations like administering medical imaging (MRI) or computed tomography (CT) scans are irrelevant at the crash site since these can only be performed in a medical facility.
One action that would not justify moving an injured person is 'to Stop moving and become stationary till it passes by'. In the absence of any immediate danger that necessitates moving the person, it is best to leave them in place to prevent further injury until emergency services arrive. Running toward or alongside an ambulance does not typically require or justify moving an injured individual.
Further, in the case of severe bleeding following a motor vehicle accident, where there is no time for blood typing, universal donor blood, type O negative, is typically transfused due to its compatibility with all other blood types, mitigating the risk of immune reactions.