A nurse is caring for an 18-month-old infant who is 12 hours postoperative following a myringotomy. Which of the following pain rating scales should the nurse use?

Choice A rationale:
Swelling around the eyelids and mouth could indicate an allergic reaction, which can be severe in some cases. Anaphylaxis is a life-threatening reaction that can occur after immunizations. The nurse's priority is to assess and address any signs of an allergic reaction promptly. Swelling of the face, particularly around the eyes and mouth, is a red flag for potential anaphylaxis, and immediate intervention is necessary to prevent further complications.

Choice B rationale:
A temperature of 100.7 degrees Fahrenheit is considered a mild fever. While it's important to monitor for fever after immunizations, a mild fever alone may not be the nurse's top priority, especially if the child is otherwise stable. Fever can be a common post-immunization response and is often self-limiting.
Choice C rationale:
While monitoring the child's intake is important, only eating 2 ounces during the last feeding is not a priority concern compared to potential allergic reactions or fever. A temporary decrease in appetite following immunizations can be expected and might resolve on its own.
Choice D rationale:
Crying when the injection site is touched is a common response to discomfort from the shot. While it's essential to provide comfort and support to the child, this finding is not indicative of a severe reaction. It's not the nurse's priority compared to potential signs of an allergic reaction or a more significant fever.

Choice A rationale:
Apply cold packs to the lower abdomen. This is the correct answer because applying cold packs to the lower abdomen can help alleviate dysmenorrhea (painful menstrual cramps). Cold therapy helps to constrict blood vessels, reducing blood flow to the area and thus reducing pain. It's a non-pharmacological approach to managing menstrual cramps.
Choice B rationale:
Increase daily intake of fat. Increasing fat intake is not a recommended approach for managing dysmenorrhea. Balanced nutrition is important, but increasing fat intake is unlikely to significantly impact menstrual cramps. Other strategies are more effective.
Choice C rationale:
Massage the lower back area. Massaging the lower back can help with muscle relaxation and may provide some relief, but it is not as effective as applying cold packs to the lower abdomen for dysmenorrhea. Cold packs specifically target blood flow reduction to the area of pain.
Choice D rationale:
Limit physical activity. While it's generally a good idea to avoid strenuous physical activity during periods of intense pain, limiting physical activity alone is not the most effective strategy for managing dysmenorrhea. Cold packs and other interventions are more likely to provide relief.