Table 1.

Nasopharyngeal temperature at different points in three groups

Group	n	T1	T2	T3	T4
A	25	36.40 ± 0.19	35.88 ± 0.21t	35.62 ± 0.18t	35.60 ± 0.17t
B	25	36.37 ± 0.24	35.92 ± 0.24t	36.10 ± 0.20*t	36.35 ± 0.20*
C	25	36.35 ± 0.21	35.88 ± 0.18t	35.81 ± 0.20*#t	35.85 ± 0.17*#t

Values are presented as mean ± standard deviation

5 min after anesthesia induction (T1), 30 min at the beginning of surgery (T2), 60 min at the beginning of surgery (T3), 90 min at the beginning of surgery (T4)

^*P<0.05 compared to the same time of Group A

^#P<0.05 compared to the same time of Group B

^tP<0.05 compared to T1