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Letter to the Editor
Technology in context: A holistic care approach
José Pedro Lavrador, Sabina Patel, Richard Gullan, Ranjeev Bhangoo,
Francesco Vergani, Keyoumars Ashkan
PII:
DOI:
Reference:
S1388-2457(19)31292-1
https://doi.org/10.1016/j.clinph.2019.10.026
CLINPH 2009036
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Clinical Neurophysiology
Received Date:
Accepted Date:
13 October 2019
15 October 2019
Please cite this article as: Pedro Lavrador, J., Patel, S., Gullan, R., Bhangoo, R., Vergani, F., Ashkan, K.,
Technology in context: A holistic care approach, Clinical Neurophysiology (2019), doi: https://doi.org/10.1016/
j.clinph.2019.10.026
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© 2019 Published by Elsevier B.V. on behalf of International Federation of Clinical Neurophysiology.
Technology in context: a holistic care approach
José Pedro Lavrador*, Sabina Patel, Richard Gullan, Ranjeev Bhangoo, Francesco Vergani, Keyoumars
Ashkan
Neurosurgical Department, King’s College Hospital Foundation Trust, London, United Kingdom
* Correspondence
We read with great enthusiasm the paper published by Seidel et al. (2019). To our knowledge, this is
the first published series where navigated transcranial magnetic stimulation (nTMS) was used to
predict the motor recovery in patients with motor deficit after surgery for a supratentorial brain
tumor. Building on the previous work performed by this group where 25% of patients with
intraoperative loss of motor evoked potentials (MEPs) still recovered the motor function after
surgery (Seidel et al., 2013), the post-operative nTMS revealed a negative predictive value of 100%
(no motor recovery at 1 month if no MEPs elicited with nTMS) and a positive predictive value of 91%
(motor recovery at 1 month if MEPs elicited with TMS). Post-operative nTMS was therefore able to
enhance the prognostic information provided by the intraoperative direct cortical stimulation.
We agree with the authors that nTMS is particularly useful in patients with lesions in the
supplementary motor and ventral premotor areas (SMA and VPM), where the interpretation of
motor deficits is challenging and a source of significant anxiety, to efficiently differentiate between
the temporary deficits produced by the surgical resection from the permanent deficits. Our group
routinely uses the post-operative diffusion tensor imaging (DTI)-tractography to assess the integrity
of the corticospinal tract (CST) after surgical resection in patients with post-operative motor deficits
(Figure 1). Results presented in this paper encourage a combined strategy, nTMS and tractography,
to further improve prediction of post-operative motor recovery in these patients.
In our view a critical point to highlight though is the importance of intensive post-operative
physiotherapy and neurorehabilitation in patients with deficits despite the results of functional and
structural data such as nTMS and tractography, as it happened with the patients described by Seidel
et al. (2019). There is now ample evidence across the age groups that taking part in physical
rehabilitation programs has far reaching benefits beyond motor recovery, including improving the
patients’ well-being and adhesion to the treatments (Riggs et al., 2017). The authors discuss the
importance of having realistic expectations about post-operative motor recovery by both the patient
and the multidisciplinary team (MDT) members (neurosurgeons, oncologists, physiotherapists)
(McGirt et al., 2009). This however needs to be balanced against the potential psychological stresses
caused to the patient by this information, at a critical time in their journey when motivation is
paramount, thus hindering recovery from surgery and engagement with further treatment (Cormie
et al., 2015). Moreover, there is a risk that the perceived permanency of the post-operative deficit
biases the further management of the patient by the MDT, not only in terms of rehabilitation but
provision of timely adjuvant therapy. These considerations should be framed within each cultural
and social background as well as regional and national policies for adjuvant oncological treatment.
Seidel et al. need to be congratulated on their efforts to push forward the clinical applications of
nTMS and pave the way for new and better postoperative motor recover predictability scores. Such
information, however, will need to be integrated as part of the holistic approach towards the
patients’ best interests. Physical rehabilitation should be considered to all patients regardless of the
postoperative functional-structural data as it may improve the motor recovery in those with
favorable postoperative parameters (MEPs elicited with post-operative nTMS and / or integrity of
the CST in the post-operative DTI), and the psychological well-being and a sense of value in all
affected by this terrible disease.
Conflict of Interest
None of the authors have potential conflicts of interest to be disclosed and the authors had no
funding source to write this manuscript.
References
Cormie P, Nowak AK, Chambers SK, Galvão DA, Newton RU. The potential role of exercise in neurooncology. Front Oncol. 2015;5:85.
McGirt MJ, Mukherjee D, Chaichana KL, Than KD, Weingart JD, Quinones-Hinojosa A. Association of
surgically acquired motor and language deficits on overall survival after resection of glioblastoma
multiforme. Neurosurgery. 2009;65:463-9; discussion 469-70.
Riggs L, Piscione J, Laughlin S, Cunningham T, Timmons BW, Courneya KS, Bartels U, Skocic J, de
Medeiros C, Liu F, Persadie N, Scheinemann K, Scantlebury N, Szulc KU, Bouffet E, Mabbott DJ.
Exercise training for neural recovery in a restricted sample of pediatric brain tumor survivors: a
controlled clinical trial with crossover of training versus no training. Neuro Oncol. 2017;19:440-450.
Seidel K, Beck J, Stieglitz L, Schucht P, Raabe A. The warning-sign hierarchy between quantitative
subcortical motor mapping and continuous motor evoked potential monitoring during resection of
supratentorial brain tumors. J Neurosurg. 2013;118:287-96.
Seidel K, Häni L, Lutz K, Zbinden C, Redmann A, Consuegra A, Raabe A, Schucht P. Postoperative
navigated transcranial magnetic stimulation to predict motor recovery after surgery of tumors in
motor eloquent areas. Clin Neurophysiol. 2019;130:952-959.
Figure Caption
Figure 1 – Pre-Operative (blue box) and Post-Operative (orange box) tractography in a
patient with a right side supplementary motor area WHO Grade IV Glioma – A (coronal), B
(sagittal), C (axial) and D (3D reconstruction) of preoperative tractography. E (coronal), F
(sagittal), G (axial) and H (3D reconstruction) of postoperative tractography. Green – Upper
Limb streamlines. Red – Lower Limb streamlines. StealthViz MEDTRONIC® Software