Department of Anaesthesiology, University of Erlangen-Nuremberg, Krankenhausstr 12, 91054, Erlangen, Germany.
Langenbecks Arch Surg. 2011 Dec;396(8):1173-9. doi: 10.1007/s00423-011-0819-2. Epub 2011 Jun 29.
Recurrent laryngeal nerve (RLN) monitoring systems should be reliable and safe. Monitoring via electromyographical systems on an endotracheal tube (ETT) is widely spread. The MagStim™ system consists of an adhesive electrode to be fixed on an endotracheal tube. The Xomed™ endotracheal tube provides integrated electrodes. Reliability and side effects had never been compared. As both systems have very different morphological properties, we hypothesized that there might be differences in reliability and the incidence of side effects.
In a retrospective quality management analysis of 118 patients (MagStim™ electrode, 57 patients; Xomed™ ETT, 61 patients), we compared laryngeal side effects according to the Chilla score and detection rate of the RLN.
Both systems had comparable detection rates of the RLN above 95%. Both electrode systems seemed to have similar reliability. Difficulties to detect the nerve were observed in seven patients (four with MagStim, three with Xomed). In the group with the Xomed™ ETT, significantly less mild laryngeal side effects were observed.
Both MagStim™ and Xomed™ ETT were reliable in detecting the RLN. The Xomed™ ETT, however, might cause milder laryngeal side effects compared with the MagStim™ electrode.
喉返神经（RLN）监测系统应该是可靠和安全的。通过在气管内管（ETT）上进行肌电图系统监测已经得到广泛应用。MagStim™系统由一个粘性电极组成，可固定在气管内管上。Xomed™气管内管提供集成电极。可靠性和副作用从未被比较过。由于这两种系统具有非常不同的形态特征，我们假设可能存在可靠性和副作用发生率的差异。
在对 118 例患者（MagStim™电极，57 例；Xomed™ETT，61 例）进行回顾性质量管理分析中，我们根据 Chilla 评分和 RLN 的检测率比较了喉部副作用。
两种系统对 RLN 的检测率均超过 95%。两种电极系统似乎具有相似的可靠性。在 7 例患者中观察到检测神经困难（MagStim 有 4 例，Xomed 有 3 例）。在 Xomed™ETT 组中，观察到的轻度喉部副作用明显较少。
MagStim™和 Xomed™ETT 在检测 RLN 方面均可靠。然而，与 MagStim™电极相比，Xomed™ETT 可能引起更轻微的喉部副作用。
