A nurse is collecting data from a child who has sickle disease and is experiencing a vaso-occlusive crisis. Which of the following findings should the nurse expect?

A. Pain: This is the most common and significant symptom of a vaso-occlusive crisis in sickle cell disease. The sickled cells block blood flow, leading to intense pain and tissue ischemia. B. Vomiting: Vomiting is not a typical finding associated with a vaso-occlusive crisis. While it may occur due to other complications or treatments, it is not directly related to the crisis itself. C. Constipation: Constipation is not a typical symptom of a vaso-occlusive crisis. It may occur due to decreased activity or medication side effects, but it is not directly linked to the sickle cell crisis. D. Bradycardia: Bradycardia is not expected in a vaso-occlusive crisis. The crisis usually involves pain and stress, which might increase the heart rate rather than decrease it.