A laboring client received meperidine IV one hour prior to delivery. Which of the following medications should the nurse have available to counteract the effects of this medication on the newborn?

Choice A rationale:
Tamoxifen is not used to treat Non-Hodgkin's lymphoma. Tamoxifen is a selective estrogen
receptor modulator (SERM) and is primarily used in breast cancer treatment. It functions by
binding to estrogen receptors, blocking estrogen's effects, and inhibiting the growth of
hormone-sensitive breast cancer cells.
Choice B rationale:
Tamoxifen is not used to treat endometriosis. Endometriosis is a condition in which tissue
similar to the lining of the uterus grows outside the uterus, and it is typically managed with
hormonal therapies, pain medications, or surgical interventions, but not tamoxifen.
Choice C rationale:

This is the correct choice. Tamoxifen is widely used in the treatment of breast cancer,
especially in cases of estrogen receptor-positive breast cancer. It helps prevent cancer
recurrence and is often prescribed for both early-stage and advanced breast cancer patients.
Choice D rationale:
Tamoxifen is not used to treat polycystic ovary syndrome (PCOS). PCOS is a hormonal
disorder characterized by enlarged ovaries with small cysts, and it is typically managed with
lifestyle changes, hormonal contraceptives, and medications to regulate menstrual cycles and
manage symptoms like hirsutism and acne.

Choice A rationale:

Fentanyl is an opioid analgesic and is not used to counteract the effects of meperidine in the newborn. Both fentanyl and meperidine are opioids, and using fentanyl in this context would not counteract the effects of meperidine.

Choice B rationale:

Flumazenil is a medication used to reverse the effects of benzodiazepines, not opioids like meperidine. It is not appropriate for countering the effects of meperidine in the newborn.

Choice C rationale:

Naloxone is an opioid antagonist that can reverse the effects of opioids like meperidine. When a newborn has been exposed to opioids during labor, such as meperidine given to the mother, there is a risk of respiratory depression in the newborn. Naloxone can quickly reverse this effect and restore normal respiratory function.

Choice D rationale:

Benztropine is an anticholinergic medication used to treat side effects of antipsychotic drugs and is not relevant in this situation. It would not counteract the effects of meperidine on the newborn.