Table 1.

Patient Characteristics and Intraoperative Data.

	Control (n = 20)	Ketamine (n = 20)
All values, except for male/female ratio, are mean ± SD
Gender (M/F)	7/13	6/14
Age (yr)	69 ± 6	68 ± 8
Weight (kg)	74 ± 14	71 ± 10
Height (cm)	166 ± 6	165 ± 7
Duration of surgery (min)	115 ± 26	115 ± 27
Intraoperative sufentanil (μg/kg)	0.64 ± 0.2	0.59 ± 0.2