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

Table 6

Incidence and severity of postoperative hoarseness of voice.

	Group C		Group S		value
	Grade 2	Grade 3	Grade 2	Grade 3
30 min	24 (60%)	16 (40%)	15 (37.5%)	25 (62.5%)	0.024
2 h	22 (55%)	13 (32.5%)	20 (50%)	16 (40%)	0.041
4 h	17 (42.5%)	11 (27.5%)	17 (42.5%)	10 (25%)	0.021
24 h	11 (27.5%)	7 (17.5%)	15 (37.5%)	2 (5%)	≤0.001

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