Performance of Surgical Stress Index during Sevoflurane-Fentanyl and Isoflurane-Fentanyl Anesthesia

Table 2

Mean surgical stress index (SSI ± SD), heart rate (HR ± SD), noninvasive mean arterial pressure (NIBP_MAP ± SD), spectral entropy (SE ± SD), and response entropy (RE ± SD) values at different measuring points.

	SSI	HR	NIBPMAP	SE	RE
Baseline	60.3 (9.6)	71.1 (11.9)	108.9 (14.1)	86.4 (6.2)	95.5 (6.0)
Before intubation	44.2 (9.9)	73.2 (15.7)	95.0 (13.9)	60.3 (14.4)	62.6 (15.2)
After intubation	61.5 (12.9)^#	82.3 (17.8)^#	106.7 (23.4)^#	68.8 (12.8)^#	72.6 (13.6)^#
Before incision	38.1 (12.4)	61.3 (14.5)	68.9 (9.9)	46.7 (8.9)	48.9 (9.3)
After incision	47.5 (13.3)^#	66.4 (15.6)	81.9 (17.5)^#	45.3 (10.0)	47.3 (10.7)

#: statistically significant increase of different values compared to the value in the former square.