Final answer:
Anaphylaxis is a severe allergic reaction that requires prompt treatment with an epinephrine autoinjector. After administering penicillin, the nurse should closely monitor the patient and be prepared to administer epinephrine if anaphylaxis develops.
Step-by-step explanation:
Anaphylaxis is a life-threatening systemic allergic reaction caused by a massive release of histamines. It can result in symptoms such as drop in blood pressure, changes in heart rate, shortness of breath, and swelling of the tongue and throat. The primary treatment for anaphylaxis is an epinephrine autoinjector, which helps control the immune reaction until medical care can be provided.
After administering penicillin, the nurse should ensure prompt treatment if anaphylaxis should develop by closely monitoring the patient for any signs of an allergic reaction, such as hives, difficulty breathing, or swelling. The nurse should also be prepared to administer epinephrine immediately if necessary.