Algazlan Alhassan, Almuhawas Fida, Alarifi Sarah, Abdelsamad Yassin, Alkahtani Maram, Aljazeeri Isra, Alsanosi Abdulrahman, Hagr Abdulrahman
Department of Otolaryngology-Head and Neck Surgery, College of Medicine King Saud University Riyadh Saudi Arabia.
King Abdullah Ear Specialist Center (KAESC), College of Medicine King Saud University Riyadh Saudi Arabia.
Laryngoscope Investig Otolaryngol. 2025 Aug 25;10(4):e70247. doi: 10.1002/lio2.70247. eCollection 2025 Aug.
The triphasic pulse pattern (TPP) is one of the successful strategies for managing facial nerve stimulation (FNS) after cochlear implantation (CI). This study evaluates the electrode impedance (EI) changes for patients who were shifted from the biphasic pulse pattern (BPP) to TPP.
This retrospective study was conducted on the patients who experienced FNS post-CI and were managed with a TPP strategy. The fitting parameters with TPP were compared to those with BPP, including electrode impedance, maximum comfortable levels (MCL), threshold levels (THR), and phase duration. .
This study included 25 implanted ears. The impedances of the electrode contacts significantly decreased when shifted to TPP at the first two apical contacts compared to the BPP (7.0 ± 2.7 vs. 7.8 ± 3.4 kΩ at the first contact and 6.5 ± 2.4 vs. 7.1 ± 2.9 kΩ at the second contact, respectively). The MCL showed a statistically significant increase with TPP compared to the BPP at the first 10 electrode contacts.
The TPP of stimulation appears to be a successful strategy for managing FNS. Among the patients with FNS, there is a decrease in the most apical impedance values and an increase in MCL when using TPP. These findings suggest that TPP might be considered a routine and successful pattern for FNS patients. Future studies should investigate the impact of different stimulation patterns on CI outcomes.
三相脉冲模式（TPP）是人工耳蜗植入（CI）后管理面神经刺激（FNS）的成功策略之一。本研究评估了从双相脉冲模式（BPP）转换为TPP的患者的电极阻抗（EI）变化。
本回顾性研究针对人工耳蜗植入后经历面神经刺激并采用TPP策略管理的患者进行。将TPP的拟合参数与BPP的拟合参数进行比较，包括电极阻抗、最大舒适水平（MCL）、阈值水平（THR）和相位持续时间。
本研究纳入25只植入耳。与BPP相比，在前两个顶端电极触点转换为TPP时，电极触点的阻抗显著降低（第一个触点分别为7.0±2.7 vs. 7.8±3.4 kΩ，第二个触点为6.5±2.4 vs. 7.1±2.9 kΩ）。在前10个电极触点处，与BPP相比，TPP的MCL有统计学显著增加。
刺激的TPP似乎是管理FNS的成功策略。在FNS患者中，使用TPP时最顶端的阻抗值降低，MCL增加。这些发现表明，TPP可能被认为是FNS患者的常规且成功的模式。未来的研究应调查不同刺激模式对人工耳蜗植入结果的影响。
3级。
