Final answer:
After administering an EpiPen, which contains epinephrine, follow-up treatments with antihistamines and corticosteroids are common to prevent late-phase allergic reactions. EpiPens are crucial for individuals with severe allergies and they expire annually, requiring regular replacement.
Step-by-step explanation:
When assisting a patient with an EpiPen®, a device loaded with a dose of epinephrine, it is crucial for the rapid halting of an anaphylactic reaction to an allergen. The process involves injecting epinephrine directly into the thigh, which can be performed through clothing. Post-administration, follow-up treatments usually include antihistamines and corticosteroids to prevent any late-phase reactions, although the efficacy of such treatments isn't thoroughly researched but are based on theoretical considerations. Prescribed annually in the millions, EpiPens are essential for individuals with severe allergies, providing a life-saving function during anaphylactic emergencies. It should be noted that epinephrine has an expiration date, hence, even unused EpiPens need replacement yearly.