Final answer:
The nurse would administer epinephrine immediately to counteract the effects of anaphylactic shock.
Step-by-step explanation:
The nurse would anticipate administering epinephrine immediately to the client experiencing difficulty breathing and hives after eating shrimp. Epinephrine is used to counteract the effects of anaphylactic shock, which can be life-threatening. Anaphylactic shock is a severe allergic reaction that can cause a drop in blood pressure (shock) and contractions of bronchial smooth muscle.