Secondary outcomes
poisoning, nausea and vomiting, hoarseness, dyspnoea
None of the patients in either of the two groups had severe dyspnoea, local anaesthetic poisoning reactions or hoarseness after anaesthesia. One patient in group F required remedial analgesia within 24 h, one patient in group F and two patients in group experienced nausea and vomiting. There was a statistically significant difference in heart rate at the time of anaesthesia induction (T2) between the two groups(P < 0.05); but there was no statistically significant difference in vital signs between the two groups at other time points(P > 0.05) (see Table 
Comparison of intraoperative vital signs between the two groups Comparison with group S, 