Deep brain stimulation for secondary dystonia: results in 8 patients
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Dystonia is a medically intractable condition characterized by involuntary twisting movements and/or abnormal postures. Deep Brain Stimulation (DBS) has been used successfully in various forms of dystonia. In the present study, we report on eight patients with secondary dystonia, treated with DBS in our clinic.
Eight patients (five males, three females) underwent DBS for secondary dystonia. The etiology of dystonia was cerebral palsy (n = 2), drug-induced (n = 1), post encephalitis (n = 2) and postanoxic dystonia (n = 3). The functional capacity was evaluated before and after surgery with the use of Burke-Fahn-Mardsen Dystonia Rating Scale (BFM scale), both movement and disability scale (MS and DS, respectively). The target for DBS was the globus pallidus internus (GPi) in 7 patients and in one patient, with postanoxic damaged pallidum, the ventralis oralis anterior (Voa) nucleus. Brain perfusion scintigraphy using Single Photon Emission Computed Tomography (SPECT) was performed in two separate studies for each patient, one in the “off-DBS” and the other in the “on-DBS” state.
Postoperative both MS and DS scores were found to be significantly lower compared to preoperative scores (p = 0.018 and p = 0.039, respectively). Mean improvement rate after DBS was 41.4% (0 – 94.3) and 29.5% (0 – 84.2) in MS and DS scores, respectively. The SPECT Scan, during the “on-DBS” state, showed a decrease in regional cerebral blood flow (rCBF), compared to the “off-DBS” state.
Our results seem promising in the field of secondary dystonia treatment. More studies with greater number of patients and longer follow-up periods are necessary in order to establish the role of DBS in the management of secondary dystonia. Finally, the significance of brain SPECT imaging in the investigation of dystonia and functional effects of DBS should be further evaluated.
KeywordsDeep brain stimulation GPi Secondary dystonia Voa
- 1.Albanese A, Barnes MP, Bhatia KP, Fernandez-Alvarez E, Filippini G, Gasser T, Krauss JK, Newton A, Rektor I, Savoiardo M, Valls-Sole J (2006) A systematic review on the diagnosis and treatment of primary (idiopathic) dystonia and dystonia plus syndromes: report of an EFNS/MDS-ES Task Force. Eur J Neurol 13:433–444. doi: 10.1111/j.1468-1331.2006.01537.x PubMedCrossRefGoogle Scholar
- 8.Eltahawy HA, Saint-Cyr J, Giladi N, Lang AE, Lozano AM (2004) Primary dystonia is more responsive than secondary dystonia to pallidal interventions: outcome after pallidotomy or pallidal deep brain stimulation. Neurosurgery 54:613–619. doi: 10.1227/01.NEU.0000108643.94730.21 discussion 619-621PubMedCrossRefGoogle Scholar
- 10.Gavarini S, Vayssiere N, Delort P, Cif L, Biolsi B, Tancu C, Vasques X, Plagnol S, Bonafe A, Coubes P (2008) Stereotactic MRI in dyt1 dystonia: focal signal abnormalities in the basal ganglia do not contraindicate deep brain stimulation. Stereotact Funct Neurosurg 86:245–252. doi: 10.1159/000131663 PubMedCrossRefGoogle Scholar
- 20.Kupsch A, Benecke R, Muller J, Trottenberg T, Schneider GH, Poewe W, Eisner W, Wolters A, Muller JU, Deuschl G, Pinsker MO, Skogseid IM, Roeste GK, Vollmer-Haase J, Brentrup A, Krause M, Tronnier V, Schnitzler A, Voges J, Nikkhah G, Vesper J, Naumann M, Volkmann J (2006) Pallidal deep-brain stimulation in primary generalized or segmental dystonia. N Engl J Med 355:1978–1990. doi: 10.1056/NEJMoa063618 PubMedCrossRefGoogle Scholar
- 24.Schaltenbrand G, Wahren A (1982) Stereotaxic atlas of the human brain. Thieme Verlag, New YorkGoogle Scholar
- 28.Vidailhet M, Vercueil L, Houeto JL, Krystkowiak P, Benabid AL, Cornu P, Lagrange C, Tezenas du Montcel S, Dormont D, Grand S, Blond S, Detante O, Pillon B, Ardouin C, Agid Y, Destee A, Pollak P (2005) Bilateral deep-brain stimulation of the globus pallidus in primary generalized dystonia. N Engl J Med 352:459–467. doi: 10.1056/NEJMoa042187 PubMedCrossRefGoogle Scholar
- 31.Zhang JG, Zhang K, Wang ZC, Ge M, Ma Y (2006) Deep brain stimulation in the treatment of secondary dystonia. Chin Med J (Engl) 119:2069–2074Google Scholar