A pregnant patient at 24 weeks gestation reports pain in the lower abdomen and back. What is the nurse's first priority action?
Correct Answer: B
Rationale: The correct answer is B: Assess the patient for signs of preterm labor, including regular contractions. At 24 weeks gestation, lower abdominal and back pain can indicate preterm labor, a serious complication. The nurse's first priority should be to assess for signs such as regular contractions, vaginal bleeding, pelvic pressure, or changes in vaginal discharge. Prompt identification of preterm labor allows for timely interventions to prevent preterm birth and its associated risks. Administering pain relief (choice A) without assessing for preterm labor can delay necessary interventions. Recommending rest and heat application (choice C) may not address the underlying cause of the pain. Instructing the patient to lie flat on her back (choice D) may worsen symptoms and is not recommended in pregnancy.