5.

两组产妇皮质醇浓度的比较

Comparison of serum cortisol level between Group A and Group B (n=60, Mean±SD)

Group	Before injection (μg/dL)	2 hours after injection (μg/dL)	Fetal disengagement (μg/dL)
*P < 0.05 vs group A. Group A: 0.2% ropivacaine 1 mL; Group B: 0.9% NS 1 mL.
A	31.01±4.12	32.27±4.00	38.37±3.96
B	29.91±4.27	38.66±3.48*	39.22±3.21