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Intraoperative monitoring with evoked potentials in brainstem surgery

Yazhuo Zhang

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Abstract

Objective To observe the influence of operative injury near brainstem on auditory brainstem evoked potentials (BAEP) and somatosensory evoded potentials(SEP), in order to find sensitive eletrophysiological indexes for neurofunction injury.Methods The 23 patients were monitored continuously during brainstem operation with BAEP,SEP.Results The operation in or near brainstem could induce the change of BAEP and SEP. The parameters changed significantly during intraoperation evoked potentials monitoring were N20 wave and N13 N20 central conduction time (CCT) in SEP, V peak latency, Ⅲ Ⅴ,Ⅰ Ⅴ interpeak latency in BAEP respectively.Conclusions It is important to monitor evoked potentials in brainstem operation surgery.

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What this paper is about

Objective To observe the influence of operative injury near brainstem on auditory brainstem evoked potentials (BAEP) and somatosensory evoded potentials(SEP), in order to find sensitive eletrophysiological indexes for neurofunction injury.Methods The 23 patients were monitored continuously during brainstem operation with BAEP,SEP.Results The operation in or near brainstem could induce the change of BAEP and SEP. The parameters changed significantly during intraoperation evoked potentials monitoring were N20 wave and N13 N20 central conduction time (CCT) in SEP, V peak latency, Ⅲ Ⅴ,Ⅰ Ⅴ interpeak latency in BAEP respectively.Conclusions It is important to monitor evoked potentials in brainstem operation surgery.

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Available abstract

Objective To observe the influence of operative injury near brainstem on auditory brainstem evoked potentials (BAEP) and somatosensory evoded potentials(SEP), in order to find sensitive eletrophysiological indexes for neurofunction injury.Methods The 23 patients were monitored continuously during brainstem operation with BAEP,SEP.Results The operation in or near brainstem could induce the change of BAEP and SEP. The parameters changed significantly during intraoperation evoked potentials monitoring were N20 wave and N13 N20 central conduction time (CCT) in SEP, V peak latency, Ⅲ Ⅴ,Ⅰ Ⅴ interpeak latency in BAEP respectively.Conclusions It is important to monitor evoked potentials in brainstem operation surgery.

Key concepts: Brainstem, Somatosensory evoked potential, Brainstem auditory evoked potential, Latency (audio), Anesthesia, Evoked potential, Audiology, Psychology

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