Comparison of postoperative indexes of different groups.
NRS, pain
GROUP B
Group A, Group B and Group C were all subjected to superior laryngeal nerve block, and the dosage of sufentanil was 0.4μg/kg, 0.2μg/kg and 0 μ g/kg respectively. In group D, there was no superior laryngeal nerve block, and the dosage of sufentanil was 0.4 μ g/kg. NRS score: pain intensity score.