Which statement by a patient indicates good understanding of the nurse's teaching about prevention of sickle cell crisis?

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Because infection is the most common cause of a sickle cell crisis,influenza,Haemophilus influenzae,pneumococcal pneumonia,and hepatitis immunizations should be administered. Although continuous dose opioids and oxygen may be administered during a crisis,patients do not receive these therapies to prevent crisis. Hydroxyurea (Hydrea)is a medication used to decrease the number of sickle cell crises.

Which Statement by a Patient Indicates Good Understanding of the Nurse's