Table 4.

Postoperative parameters of the enrolled patients (N = 62)

	SPI group (N = 31)	Control group (N = 31)	P-value
Extubation time (min)	16.1 ± 5.2	22.1 ± 6.3	<0.001*
PONV (N.)	2	3	0.500
VAS score
Resting VAS score	1.9 ± 1.2	1.8 ± 1.2	0.838
Active VAS score	3.8 ± 1.0	3.7 ± 1.0	0.811
Remedial analgesics (N.)	3	2	0.500

Data are expressed as the frequencies or means ± SDs, as appropriate

* The difference in extubation time between the two groups was significant, P < 0.001