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Erschienen in: Acta Neurochirurgica 3/2018

24.01.2018 | Original Article - Vascular

The impact of nTMS mapping on treatment of brain AVMs

verfasst von: Sebastian Ille, Thomas Picht, Ehab Shiban, Bernhard Meyer, Peter Vajkoczy, Sandro M. Krieg

Erschienen in: Acta Neurochirurgica | Ausgabe 3/2018

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Abstract

Background

The treatment of brain arteriovenous malformations (BAVMs) is still contrarily discussed. Despite the debatable results of the ARUBA trial, most BAVMs still require treatment depending on the Spetzler-Martin (SM) grading. Since size is measurable and venous drainage is visible, the determination of eloquence is comparably crucial but not fully objective. The present bicentric cohort study aims to examine the influence of preoperative navigated transcranial magnetic stimulation (nTMS) motor and language mapping data on decision-making for or against surgical treatment of BAVMs.

Methods

The influence of data from nTMS on decision-making for or against treatment of BAVMs was examined by confirming/falsifying presumed motor or language eloquence.

Results

The results of nTMS mappings changed the SM grading in nine cases. In six cases, the SM grading changed to a lower grade (= falsified eloquence); in three cases, the SM grading changed to a higher grade due to nTMS mappings (= unexpected eloquence). Out of all 34 cases, indication for surgery was supported by nTMS mappings in 15 cases (7 motors, 8 languages). In six cases, the decision against surgery was made based on nTMS mappings (three motors, three languages).

Conclusion

In 21 of 34 cases (62%), nTMS was a supportive argument. We could show that nTMS motor and language data can be used for a more objective decision-making regarding the treatment of BAVMs and for a more detailed SM grading regarding the rating of eloquence.
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Metadaten
Titel
The impact of nTMS mapping on treatment of brain AVMs
verfasst von
Sebastian Ille
Thomas Picht
Ehab Shiban
Bernhard Meyer
Peter Vajkoczy
Sandro M. Krieg
Publikationsdatum
24.01.2018
Verlag
Springer Vienna
Erschienen in
Acta Neurochirurgica / Ausgabe 3/2018
Print ISSN: 0001-6268
Elektronische ISSN: 0942-0940
DOI
https://doi.org/10.1007/s00701-018-3475-2

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