A person comes into your ER room with a very weak pulse after a suffering a heart attack. You suspect:

D:  A very weak pulse shows that the heart is slowly ceasing to function as a result of pumping too hard. A: The patient should not be sent home; close observation is necessary. B: This stage is a life-threatening stage as the heart could tire itself out and stop functioning. C: An early stage of shock shows a rapid, bounding pulse.