Safety and efficacy of low-dose esketamine in laparoscopic cholecystectomy: a prospective, double-blind randomized controlled trial

Table 4 Perioperative-related indicators

	NS	LS	HS
n	30	30	30
Operating time (min, mean ± std)	50.22 ± 10.81	51.53 ± 10.42	50.83 ± 10.52
Anaesthesia time (min, mean ± std)	55.61 ± 11.25	56.31 ± 10.77	55.66 ± 10.91
Awakening time (min, mean ± std)	10.52 ± 3.43	5.81 ± 3.24^*	5.55 ± 3.26^*

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