Cost Analysis of Three Techniques of Administering Sevoflurane

Table 2

Intraoperative characteristics.

Characteristics	Group L ()	Group A ()	Group V ()	value
Duration of surgery (min)	99 ± 40.6	119.7 ± 47.3	126.8 ± 51.7	0.250
Duration of anaesthesia (min)	110.1 ± 43.8	133.2 ± 54.3	129.5 ± 48.3	0.392
Time to attain 1.0 MAC (min)	2.5 ± 1.2	3.5 ± 1.1^Φ	0.6 ± 0.6^†#	0.000
Duration of 1.0 MAC anaesthesia (min)	107.4 ± 44.2	134.1 ± 52.6	126.8 ± 51.7	0.575
HR difference^*	−1.9 ± 13.2	−5.5 ± 22.2	−12 ± 27.8	0.449
MAP difference^* (mmHg)	6.4 ± 16.8	5.9 ± 9.4	2.6 ± 20.9	0.787

Data presented as mean ± standard deviation. Group L: low flow anaesthesia; Group A: alternative method of low flow anaesthesia; Group V: volatile induction and maintenance of anaesthesia; HR: heart rate; MAP: mean arterial pressure; MAC: minimum alveolar concentration. ^*Significant difference between preinduction and postintubation parameters; for ^ΦGroup A versus Group L, ^†Group V versus Group L, and ^#Group V versus Group A.