The measurement of lecithin in relation to sphingomyelin (L/S ratio) is used to determine fetal lung maturity. Identify which ratio below is considered to be mature
1. 4:1
2. 1.8:1
3. 2:1
4. 1:1
3
1. Incorrect. This level indicates immaturity of fetal lungs.
2. Incorrect. This level indicates immaturity of fetal lungs.
3. Correct. This indicates a 2:1 ratio of lecithin to sphingomyelin and lung maturity.
4. Incorrect. This level indicates immaturity of fetal lungs.
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