A quantitative amplitude of vagus nerve obtained by intraoperative neuromonitoring predicts postoperative vocal cord paralysis among patients in thyroid/parathyroid surgery as a second option.

ABSTRACT:

Background

The advantage of intraoperative neuromonitoring (IONM) has been widely accepted in thyroid/parathyroid surgery. However, there are discrepancies of amplitudes on recurrent laryngeal nerve (RLN) palsy and vocal cord paralysis (VCP) because of amplitude variations among individuals. Accordingly, the universal usefulness of quantitative amplitude value per se among patients were assessed.

Study design

IONM using a 4-step method (Vagus nerve (V1)-RLN (R1)-R2-V2) was applied to 777 RLNs (510 patients). Forty-nine RLNs were excluded because of either loss of signal without preoperative VCP or combined RLN resection. The remaining 728 RLNs were evaluated. The optimal cut-offs of amplitudes or ratios of amplitude decrease on VCP were determined and evaluated

SUBMITTER: Katoh H 

PROVIDER: S-EPMC11773083 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature