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Tailoring neurophysiological strategies with clinical context enhances resection and safety and expands indications in gliomas involving motor pathways.

Abstract：

BACKGROUND:Resection of motor pathway gliomas requires the intraoperative recognition of essential cortical-subcortical motor structures. The degree of involvement of motor structures is variable, and increases as result of treatments patients are submitted to. Intraoperative neurophysiology offers various stimulation modalities, which efficiency is based on the ability to recognize essential sites with the highest possible resolution in most clinical conditions. Two stimulation paradigms evolved for intraoperative guidance of motor tumors removal: the 60 Hz-technique [low frequency (LF)] and the pulse-technique [high frequency-(HF)], delivered by bipolar or monopolar probe respectively. Most surgical teams rely on to either of the 2 techniques. The key point is the integration of the choice of the stimulation modality with the clinical context. METHODS:In 591 tumors involving the corticospinal tract, the use of HF and LF was tailored to the clinical context defined by patient clinical history and tumor features (by imaging). The effect was evaluated on the feasibility of mapping, the impact on immediate and permanent morbidity, the extent of resection, and the number of patients treated. RESULTS:By integrating the choice of the probe and the stimulation protocol with patient clinical history and tumor characteristics, the best probe-frequency match was identified for the different sets of clinical conditions. This integrative approach allows increasing the extent of resection and patient functional integrity, and greatly expands the number of patients who could benefit from surgery. CONCLUSIONS:The integration of stimulation modalities with clinical context enhances the extent and safety of resection and expands the population of patients who could benefit from surgical treatment.

journal_name

Neuro Oncol

journal_title

Neuro-oncology

authors

Bello L,Riva M,Fava E,Ferpozzi V,Castellano A,Raneri F,Pessina F,Bizzi A,Falini A,Cerri G

doi

10.1093/neuonc/not327

subject

Has Abstract

pub_date

2014-08-01 00:00:00

pages

1110-28

issue

eissn

1522-8517

issn

1523-5866

pii

not327

journal_volume

pub_type

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Tailoring neurophysiological strategies with clinical context enhances resection and safety and expands indications in gliomas involving motor pathways.