Different Types of Electrostimulation Probes During IONM
Different Types of Electrostimulation Probes During IONM
Intraoperative nerve monitoring is often used in many centers during thyroidectomy. According
 to the investigators' knowledge, there's no study showing superiority between bipolar and
 monopolar stimulation probes used for nerve monitoring during thyroid surgery. In this study,
 the investigators aimed to compare two different types of probes and find out
 superiorities.Twenty-one patients who underwent primary total thyroidectomy or
 hemithyroidectomy were included in the study. During surgery, amplitude and latency values
 obtained in the same patient with both bipolar and monopolar stimulation probes from 10
 different anatomical spots [vagal nerve, recurrent laryngeal nerve inferior portion,
 recurrent laryngeal nerve superior portion, external branch of superior laryngeal nerve
 (EBSLN)] were recorded prospectively, both when sheath was intact and after being dissected.
Inclusion Criteria:

 -  who underwent thyroid surgery

 Exclusion Criteria:

 -  Perioperative loss of electromyographic(EMG) signal (LOS) during intraoperative nerve
 monitorization

 -  patients with additional pathology that may affect vocal cord function,

 -  abnormal preoperative laryngeal examination

 -  history of thyroid, vocal cord or other neck surgery

 -  advanced cancer, RLN, esophageal or trachea invasion