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A female client at 36 weeks' gestation has been treated successfully for premature labor for 4 weeks. She has begun having uterine contractions today and has been admitted to the labor and delivery suite. Her amniocentesis results reveal a lecithin/sphingomyelin (L/S) ratio of 2 and positive phosphatidylglycerol (PG). These lab values indicate:
Correct Answer: D
Explanation (A) Placental maturity is assessed by a biophysical profile. (B) L/S ratio and presence of phosphatidylglycerol are not used to determine fetal asphyxia. A biophysical profile score of6 may indicate this condition. (C) Cord compression is not reflected by the L/S ratio or presence of phosphatidylglycerol. Variable decelerations observed through electronic fetal monitoring could reflect umbilical cord compression. (D) An L/S ratio>2 and the presence of phosphatidylglycerol in amniotic fluid indicate fetal lung maturity.