Final answer:
For an unruptured ectopic pregnancy, the nurse should administer Methotrexate, which is a chemotherapy agent that can stop the growth of embryonic cells in an ectopic pregnancy.
Step-by-step explanation:
If a nurse is preparing to administer medication for an unruptured ectopic pregnancy, the nurse should prepare to administer d. Methotrexate. This medication is used in certain cases to treat an ectopic pregnancy, which is a pregnancy that occurs outside the uterus, typically in a fallopian tube. Methotrexate is a chemotherapy agent that stops cells from growing, which includes the embryonic cells in the ectopic pregnancy. Oxytocin, the hormone primarily responsible for contractions during labor, and Methylergonovine, which is used to control bleeding after childbirth, are not appropriate treatments for ectopic pregnancy. Misoprostol is used to induce labor by ripening the cervix and is not the correct choice for managing an ectopic pregnancy.
Progesterone is the hormone that prepares the endometrial lining of the uterus for potential implantation of a fertilized egg, while estrogen and progesterone levels fall with the onset of menopause, leading to follicles ceasing their response to these hormones.