A nurse is educating a patient who has been prescribed tamoxifen for breast cancer. Which instruction should the nurse prioritize to ensure early detection of serious adverse effects?

Rationale:

A. Hot flashes are a common, expected side effect of tamoxifen and are usually not dangerous. Stopping the medication without consulting the provider could reduce the effectiveness of breast cancer treatment.

B. Taking tamoxifen with food may help reduce minor gastrointestinal discomfort, but this is not the priority safety concern. Gastrointestinal upset is generally mild and not life-threatening.

C. Tamoxifen increases the risk of endometrial cancer and thromboembolic events. Unusual vaginal bleeding, spotting, or discharge can be an early sign of endometrial cancer or other serious complications. Prompt reporting allows early evaluation and intervention, making this instruction a priority for patient safety.

D. Grapefruit can interact with some medications metabolized by CYP3A4, but it is not a major concern with tamoxifen. While general dietary precautions can be discussed, early detection of serious adverse effects takes precedence.

Rationale:

A. A WBC of 2,000/mm³ indicates leukopenia, which increases the risk of infection. Serving cooked fruits instead of raw fruits reduces exposure to bacteria and pathogens, as cooking kills microorganisms. This is a key infection-prevention measure for immunocompromised clients.

B. Negative-pressure rooms are used for clients with airborne infections (e.g., tuberculosis) to contain pathogens, not to protect an immunocompromised client. For a client with neutropenia, a protective isolation or positive-pressure environment is preferred to reduce exposure to pathogens.

C. Using an incentive spirometer helps prevent atelectasis and pneumonia, which is generally beneficial, but it does not directly prevent infections caused by neutropenia. It is not the priority infection-control intervention for a client with a WBC of 2,000/mm³.

D. Any elevated temperature in a neutropenic client is a medical emergency and should be reported immediately, even if lower than 39.5°C, because infection can progress rapidly. Waiting for 4 hours or for a very high fever could delay critical intervention.