A lecithin/sphingomyelin ratio is ordered for a client who is being considered for induced labor. The client is 37 weeks pregnant. The nurse midwife reviews the result of the test and notes that the client's L/S ratio is 2.5. Based on this finding, the nurse midwife determines that:

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Based on the L/S ratio, the nurse midwife determines that the fetus is not likely to develop respiratory distress syndrome during birth. An L/S ratio greater than 2.2 indicates fetal lung maturity. If the ratio is less than 2.2, the fetal lungs are most likely immature, and if induced labor is continued, supplemental oxygen therapy is a priority intervention at birth.

A Lecithin/sphingomyelin Ratio Is Ordered for a Client Who Is