The Efficacy of Ultrasound-Guided Superior Laryngeal Nerve Block as an Adjuvant to General Anesthesia during Suspension Laryngoscopy Vocal Cord Polypectomy

Table 5

Incidence of severe postoperative sore throat (POST) (grades 2 and 3).

	Group C	Group S	value
30 min	23 (57.5%)	6 (15%)	≤0.001
2 h	14 (35%)	1 (2.5%)	≤0.001
4 h	7 (17.5%)	0 (0%)	≤0.001
24 h	2 (5%)	0 (0%)	≤0.001

. Data are expressed as number (% of total).