Table 1.

Admission Characteristics of Study Population

	S (N = 35)	SD (N = 33)	SI (N = 38)
Age, yr	69.2 ± 2.1	68.8 ± 2.5	69.3 ± 3.1
Height, cm	168.2 ± 7.9	167.6 ± 8.1	168.3 ± 8.3
Body weight, kg	67.8 ± 6.1	67.3 ± 7.1	66.9± 7.9
Education, yr	8.4 ± 2.3	8.1 ± 2.7	8.2 ± 2.5
Sex (M/F)	19/16	16/17	20/18
ASA I	12	11	13
ASA II	23	22	25
Length of anesthesia, min	172.5 ± 22.9	173.03 ± 23.1	171.8 ± 21.9
Length of surgery, min	133.3 ± 22.6	132.8 ± 23.1	134.2 ± 22.8
Orthopedic surgery	25	23	26
Abdominal surgery	10	10	12
Estimated blood loss, ml	190.8 ± 161.2	182.3 ± 162.8	174.9± 158.7
Heart rate	74.7 ± 7.4	73.1 ± 7.0	72.7 ± 5.4
Mean arterial pressure	78.5 ± 7.2	76.2 ± 4.3	76.1 ± 4.4

The age, height, body weight, education, sex ratio, ASA classification, length of anesthesia, length and type of surgery, and estimated blood loss are similar between the surgery under S (N = 35), SD (N = 33), and SI (N = 38) anesthesia group.

ASA = American Society of Anesthesiologists; S = spinal; SD = spinal plus desflurane; SI = spinal plus isoflurane.