Effect of intratracheal dexmedetomidine combined with ropivacaine on postoperative sore throat: a prospective randomised double-blinded controlled trial

Table 2 Incidence and severity of sore throat and hoarseness in the first 24 h after thoracolumbar spinal surgery (%)

	Group S (n = 50)	Group D (n = 50)	Group R (n = 50)	Group DR (n = 50)
Sore throat (0/1/2/3)
2 h	44 (28/10/10/2)	40(30/11/8/1)	34(33/10/6/1)	16(42/8/0/0) *#
24 h	28 (36/10/4/0)	22(39/8/3/0)	14(43/5/2/0)	10(45/5/0/0) †
Hoarseness (0/1/2/3)
2 h	12(44/4/2/0)	10(45/3/2/0)	10(45/3/2/0)	4(48/2/0/0)
24 h	4(48/1/1/0)	2(49/1/0/0)	0(50/0/0/0)	0(50/0/0/0)

The incidence and severity of sore throat was significantly lower in Group DR than in Group S, Group D and Group R (*P < 0.05 versus Group S and #P < 0.01 versus Group D and Group R) at 2 h after the operation, but it was only significantly lower in Group DR than in Group S at 24 h after the operation (†P < 0.05)

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