Correct Answer: B

Rationale: The Lecithin/sphingomyelin (L/S) ratio is a test used to evaluate fetal lung maturity. An L/S ratio greater than 2:1 indicates fetal lung maturity. This test helps in determining the risk of respiratory distress syndrome in the newborn. Alpha-fetoprotein (AFP) is used in screening for neural tube defects, not for assessing lung maturity. The Kleihauer-Betke test is used to detect fetal-maternal hemorrhage, not fetal lung maturity. The Indirect Coombs' test is used to identify the presence of antibodies in the mother's blood that could attack fetal red blood cells, not for assessing lung maturity.

Correct Answer: D

Rationale: The correct answer is D: All of the Above. Multiple risk factors can contribute to preterm labor, including urinary tract infection, multifetal pregnancy, and oligohydramnios. These factors can lead to the uterus being irritated or overstimulated, potentially triggering early labor. Urinary tract infections can cause inflammation and contractions, multifetal pregnancies have a higher risk of preterm labor due to increased uterine stretching, and oligohydramnios can lead to poor fetal growth and premature contractions. Therefore, clients presenting with these conditions require close monitoring and management to prevent preterm birth. Choices A, B, and C are all correct risk factors for preterm labor, making option D the correct answer.

Correct Answer: C

Rationale: The correct answer is C. The nurse should advise the client to empty her bladder before an amniocentesis to minimize the risk of bladder puncture during the procedure. This precaution helps ensure the safety and accuracy of the procedure by reducing potential complications related to bladder puncture. Choices A, B, and D are incorrect because lying on the right side, fasting for 24 hours, and determining gestational age are not relevant instructions for an amniocentesis procedure.

Correct Answer: C

Rationale: During labor, effective pain management is crucial. The nurse should assist the client with patterned breathing techniques to help manage pain and administer opioid analgesic medication as ordered. Providing ice chips is a comfort measure but does not directly address pain relief. Inserting a urinary catheter is not typically indicated at this stage of labor unless there are specific medical indications, such as the need to closely monitor urine output. Therefore, the correct action for the nurse to prepare to take in this scenario is to administer opioid analgesic medication.

Correct Answer: B

Rationale: The Lecithin/sphingomyelin (L/S) ratio is a test used to evaluate fetal lung maturity. An L/S ratio greater than 2:1 indicates fetal lung maturity. This test helps in determining the risk of respiratory distress syndrome in the newborn. Alpha-fetoprotein (AFP) is used in screening for neural tube defects, not for assessing lung maturity. The Kleihauer-Betke test is used to detect fetal-maternal hemorrhage, not fetal lung maturity. The Indirect Coombs' test is used to identify the presence of antibodies in the mother's blood that could attack fetal red blood cells, not for assessing lung maturity.