Which of the following treatments is indicated if a patient has a mild allergic reaction?

The appropriate treatment indicated for a mild allergic reaction is usually an antihistamine, and Benadryl (diphenhydramine) is a commonly used medication for this purpose. Benadryl works by blocking the effects of histamine, which is released during an allergic reaction and contributes to symptoms such as itching, hives, and swelling. Administering 25 mg IV is a suitable method of delivering the medication quickly in a clinical setting, especially if the patient is experiencing discomfort from mild allergic symptoms.

In contrast, the other options do not align with the management of a mild allergic reaction. CPAP is used for respiratory support and is not indicated in cases of mild allergies. Intubation is a technique used to secure an airway and is reserved for severe allergic reactions leading to respiratory distress or anaphylaxis, which is far beyond a mild reaction. Chest compressions are part of resuscitation efforts in cardiac arrest scenarios and have no relevance in the treatment of allergic reactions. Therefore, administering Benadryl represents the best practice for addressing mild allergic symptoms effectively.