Correct Answer: A

Rationale: During the active phase of the first stage of labor, contractions lasting longer than 90 seconds can indicate uterine hyperstimulation, leading to decreased placental perfusion and fetal oxygenation. This finding should be reported to the provider for further evaluation and management. Choices B, C, and D are not the priority findings in this scenario. Contractions occurring every 3 to 5 minutes are within the normal range for the active phase of labor. Strong contractions and feeling contractions in the lower back are common experiences during labor and not necessarily concerning unless associated with other complications.

Correct Answer: D

Rationale: Urinary frequency is common during the first trimester and again at the end of pregnancy when the baby drops into the pelvis, putting pressure on the bladder.

Correct Answer: D

Rationale: Obtaining a 30-minute electronic fetal monitoring (EFM) strip prior to epidural analgesia is crucial to establish a baseline for fetal heart rate and uterine activity. This baseline helps in monitoring fetal well-being during labor and assessing the effect of analgesia on the baby. It enables the healthcare team to identify any changes in the fetal heart rate pattern and uterine contractions, ensuring the safety of both the mother and the baby. Choices A, B, and C are incorrect because having the client sit upright with legs crossed is not necessary for epidural placement, administering a bolus of lactated Ringer's solution is not typically done before epidural analgesia, and the duration of the anesthetic effect varies and is not accurately 2 hours.

Correct Answer: B

Rationale: The correct answer is B because implantation typically occurs between 6 to 10 days after conception, not 2 to 3 days. It is crucial for the nurse to intervene and provide accurate information to ensure the client receives correct education about conception. Choice A is correct as fertilization does occur in the outer third of the fallopian tube. Choice C is also accurate as sperm can remain viable in the woman's reproductive tract for 2 to 3 days. Choice D is correct as bleeding or spotting can indeed accompany implantation.

Correct Answer: B

Rationale: Methylergonovine is used to prevent or treat postpartum hemorrhage by contracting the uterus. A firm fundus indicates effective uterine contraction and less bleeding. Therefore, the correct answer is a firm fundus to palpation. The increase in blood pressure (Choice A) is not a typical finding associated with the effectiveness of methylergonovine. Increase in lochia (Choice C) may indicate excessive bleeding rather than the medication's effectiveness. Absence of breast pain (Choice D) is not directly related to the medication's effectiveness in treating postpartum hemorrhage.