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

<div>The figure shows ultrasound images. The red line in (a) shows the area of the thyrohyoid membrane, and the red circle in (a) shows the area of the internal branch of the superior laryngeal nerve and the superior laryngeal artery. The arrow in (b) shows the puncture needle.</div>

Evidence-Based Complementary and Alternative Medicine

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Figure 2

Figure 2: The Efficacy of Ultrasound-Guided Superior Laryngeal Nerve Block as an Adjuvant to General Anesthesia during Suspension Laryngoscopy Vocal Cord Polypectomy 

Figure 2 | The Efficacy of Ultrasound-Guided Superior Laryngeal Nerve Block as an Adjuvant to General Anesthesia during Suspension Laryngoscopy Vocal Cord Polypectomy 