A nurse is reinforcing teaching with an adolescent who has a new prescription for cefazolin. For which of the following findings should the nurse instruct the adolescent to monitor and report to the provider?

Constipation: Constipation is not a common or significant side effect of cefazolin. While antibiotics can sometimes cause gastrointestinal disturbances such as diarrhea or nausea, constipation is unlikely to be a major concern for this medication. The adolescent should be encouraged to maintain hydration and a balanced diet, but constipation is not a priority symptom to report in this case.

Elevated skin patches: Elevated skin patches or rashes could be a sign of an allergic reaction to cefazolin, but this is not the most immediate or critical symptom to monitor for in the context of the question. If an allergic rash develops, the adolescent should certainly report it, but elevated skin patches are more general and not directly associated with a serious or common side effect of cefazolin. Immediate concerns would be other signs of an allergic reaction, such as swelling or difficulty breathing.

Ringing in the ears: Ringing in the ears (tinnitus) can be a sign of ototoxicity, a known side effect of cefazolin, especially when administered in high doses or for prolonged periods. Ototoxicity can affect hearing and balance, and tinnitus is an early symptom. This is a serious issue that should be reported immediately, as the drug might need to be adjusted or discontinued to prevent permanent damage to the ears.

Depression: While depression is a serious condition that can affect adolescents, it is not a known side effect of cefazolin. If an adolescent experiences mood changes or symptoms of depression, these should be addressed, but they are unlikely to be directly related to the medication. Depression should always be taken seriously and managed, but it is not a primary concern related to cefazolin use.