The client receives tamoxifen for treatment of breast cancer. She asks the nurse why the medicine works. What is the best response by the nurse?
1. "Tamoxifen works by inhibiting the metabolism of breast cancer cells."
2. "Tamoxifen works by inhibiting the cellular mitosis of breast cancer."
3. "Tamoxifen works by blocking estrogen receptors on breast tissue."
4. "Tamoxifen works by binding to the DNA of breast cancer cells."
Correct Answer: 3
Rationale 1: Tamoxifen does not inhibit the metabolism of breast cancer cells.
Rationale 2: Tamoxifen does not inhibit the cellular mitosis of breast cancer.
Rationale 3: Tamoxifen acts by blocking estrogen receptors.
Rationale 4: Tamoxifen does not bind to the DNA of breast cancer cells.
Global Rationale: Tamoxifen works by blocking estrogen receptors on breast tissue. It does not inhibit the metabolism, inhibit cellular mitosis or bind to the DNA of breast cancer cells.
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