Final answer:
A nurse would identify the need for further teaching if a patient with sickle cell disease suggests resting for an hour when experiencing blurred vision, as it could signal a serious complication requiring immediate medical attention.
Step-by-step explanation:
The nurse instructs an African American man who has sickle cell disease about symptom management and prevention of a sickle cell crisis. A nurse would determine that further teaching is necessary if the patient makes the statement: "When my vision is blurred, I will close my eyes and rest for an hour." This response does not appropriately address the potential seriousness of the symptom, as blurred vision could be indicative of a serious complication like retinopathy or a cerebrovascular event and should prompt immediate medical evaluation.
Appropriate management would encourage the patient to avoid high-altitude areas, which might reduce oxygen levels in the blood and possibly precipitate a sickle cell crisis. Also, it is proper for the patient to avoid contact with anyone who has a respiratory infection to prevent illness that could trigger a crisis. Acknowledging the need for narcotic analgesics indicates an understanding of the potential severity of pain during a crisis.