Table 2.

Side effects of anesthesia.

Index	Group A	Group B	Group C	Group D
Nausea and vomiting	0	0	0	0
Uroschesis	0	0	0	0
Hypotension	0	0	0	1
Fetal bradycardia	0	0	0	0
Respiratory depression	0	0	0	0
Bromage score (0/1/2/3)	25/0/0/0	25/0/0/0	24/1/0/0	23/2/0/0
Excessive sedation	0	0	0	0

Data were presented as numbers. Compared between the four groups, P > 0.05.