Since Goodman is unresponsive, Valerie shall check for breathing and a pulse simultaneously for no more than 10 seconds.
Cardiac cycle is a process that involves the complete heartbeat of the human heart, which comprises sequential alternating contraction and relaxation of the atria and ventricles, so as to cause blood to only flow in one direction throughout the human body and aid respiration (breathing).
As a general rule, Valerie shall check for breathing and a pulse simultaneously for for at least 5 seconds, but shouldn't be more than 10 seconds.
Read more on pulse here: https://brainly.com/question/14528211
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