Objective To investigate the efficacy of ultrasound-guided cervical plexus block in radiofrequency ablation of thyroid and parathyroid benign lesions. Methods One hundred and twenty-five patients with thyroid nodules or hyperparathyroidism, who were undergone ultrasound guided radiofrequency ablation, were randomly assigned to receive either ultrasound-guided cervical plexus block or local infiltration anesthesia, and the pain grading was evaluated by numerical rating scale （NRS）. The anesthetic dosage and the effect of thermal ablation surgery of ultrasound-guided cervical plexus block anesthesia and local anesthesia were compared. Results The anesthetic dosage in ultrasound-guided cervical plexus block was lower than that in local infiltration anesthesia（ t = 17. 681, P〈0.05）. The pain grading of ultrasound guided cervical plexus block was lower than that of local infiltration anesthesia（χ2 = 33. 738, P 〈0.05）. Conclusions Ultrasound-guided cervical plexus nerve block has lower anesthetic dosage and pain grading in the radiofrequeney ablation of thyroid and parathyroid benign lesions, which may be widely applied in clinical.
Chinese Journal of Ultrasonography
Cervical plexus block