Final answer:
The nurse should document objective observations and actions taken without making assumptions about the allergic reaction to meperidine.
Step-by-step explanation:
When documenting an incident like an allergic reaction in a medical setting, it's important to include factual, specific, and objective information without making assumptions. The correct documentation should include observation of symptoms, the time they occurred, and the actions taken. Therefore, the nurse should document that "Thirty minutes after receiving meperidine, the temperature was 101° F., the client's skin was warm and flushed, and a rash was noted on the chest and back; the health care provider was notified." This statement is factual and does not assume the client is allergic, as diagnosis should be left to the healthcare provider.