Neural response telemetry in patients with the double-array cochlear implant.

Eur Arch Otorhinolaryngol. 2010 Apr;267(4):515-22. Epub 2009 Sep 25.
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Goffi-Gomez MV, Abdala CF, Peralta CG, Tsuji RK, de Brito Neto RV, Bento RF.

This study aimed to evaluate the neural response in double-array cochlear implant as well as to describe the refractory recovery and the spread of excitation functions. In a prospective study 11 patients were implanted with the double-array cochlear implant. Neural response telemetry (NRT) was performed intra-operatively. NRT threshold could be registered in 6 of the 11 patients, at least in one electrode. The remaining five patients did not show measurable neural response intraoperatively.
It was noted that although recovery and spread of excitation functions could be recorded in all the tested
electrodes with measurable neural responses, the responses were shown to be different from the usual register in patients with other etiologies.