Correct Answer: A

Rationale: Lower back pain, especially if accompanied by uterine contractions or pressure, can be a sign of preterm labor. The client should report this immediately to prevent complications or early delivery.

Correct Answer: A

Rationale: A BUN of 35 mg/dL indicates potential kidney impairment, which is a concern in preeclampsia due to compromised renal function. This finding warrants further evaluation by the provider.

Correct Answer: B

Rationale: Naegele's rule is a standard way of calculating an estimated delivery date (EDD). It involves subtracting three months from the first day of the last menstrual period (LMP), adding seven days, and then adding one year. In this case, subtracting three months from May 4th, 2013, gives February 4th. Adding seven days results in a due date of February 11th, 2014.

Correct Answer: D

Rationale: The nurse should instruct the parents to wash the penis gently with soap and water daily, but to avoid retracting the foreskin forcefully as it can cause pain and injury.

Correct Answer: B

Rationale: Late decelerations are caused by uteroplacental insufficiency, indicating that the fetus is not receiving adequate oxygen during contractions. This is an emergency that requires prompt intervention. Changing the client's position helps to improve placental blood flow, which can reduce the stress on the fetus. If the decelerations continue, further interventions, including oxygen administration and notifying the provider, may be necessary.