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Yıl:2011; Cilt: 48; Sayı: 2>> Özet
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Nöropsikiyatri Arşivi; 2011;48(2):114-118
Orta-İleri Evre Parkinson Hastalığında Subtalamik Nükleusun Unilateral Ablatif Lezyonları
HA Hanağası, O Barlas
İstanbul Üniversitesi İstanbul Tıp Fakültesi
Amaç: Orta-ileri evre Parkinson hastalığı (PH) tedavisinde, subtalamik nükleusa (STN) yönelik derin beyin stimülasyonu (DBS) ameliyatlarının tüm parkinsonyan motor semptomlara ve motor komplikasyonlara karşı yarar sağladığı bilinmektedir. Bu çalışmada unilateral STN lezyonlarının orta-ileri PH'daki etkileri araştırılmıştır.

Yöntemler: Orta-ileri evre PH olan 11 hasta (8 erkek, 3 kadın) çalışmaya alındı. Cerrahi öncesinde hastaların tamamında motor komplikasyonlardan biri veya birkaçı (doz sonu kötüleşmesi, 'a çık-kapalı? dönemler, diskinezi) vardı. Hastaların tamamı ?kapalı? dönemlerinde Hoehn-Yahr ölçeğine göre 3 veya 4 evresindeydiler ve Birleşik Parkinson Hastalığı Değerlendirme Ölçeği (BPHDÖ)?ne göre değerlendirildiler. Hastaların izlenme süreleri 12 ile 20 ay (ortalama: 14±2.94) arasında değişiyordu. Subtalamik nükleusun saptanmasında bilgisayarlı tomografi ve manyetik rezonans incelemeleri kullanıldı. Subtalamik nükleus lezyonları tek taraflı olarak termokoagülasyon kullanılarak yapıldı.

Bulgular: Subtalamotomi kontralateral, ipsilateral ve aksiyel motor bulgularda belirgin düzelme sağladı. Ortalama 'a çık? dönemdeki toplam BPHDÖ skoru 61.7±19.2'de n 31.6±15.7'ye (p=0.001) ve BPHDÖ motor bölüm skoru 26.1±11.1'de n 15±11.1'e (p=0.02) düştü. Toplam "açık" zamanı 8 hastada %50 oranında arttı, ancak diğer 3 hastada belirgin değişiklik olmadı. Maluliyet verici diskinezileri olan 9 hastanın 6?sında belirgin iyileşme hali görüldü (BPHDÖ-bölüm IV ortalama %40). Cerrahi öncesi ve sonrası levodopa-eşdeğer dozları karşılaştırıldığında 8 hastanınki azaldı, 1 hastanın arttı ve geri kalan 2'si nde değişmedi. Onbir hastanın sadece 1'inde hemiballismus gelişti. Hemiballistik hareketler ablasyondan hemen sonra ortaya çıktı ve tedavi ile iki hafta içinde tamamen düzeldi.

Sonuç: Sonuç olarak subtalamotomi orta-ileri PH'da güvenilir ve etkili bir yöntemdir. Derin beyin stimülasyonunun mümkün olmadığı vakalarda subtalamatomi alternatif bir yöntem olarak düşünülebilir.
Unilateral Ablative Lesions of the Subthalamic Nucleus in Moderate-to-Advanced Parkinson?s Disease
Objective: Deep brain stimulation (DBS) of the subthalamic nucleus (STN) has been reported to be effective in alleviating all parkinsonian motor symptoms and motor complications in moderate-to-advanced Parkinson's disease (PD). We have studied the effects of unilateral STN lesions on moderate-to-advanced PD.

Methods: Eleven patients (eight male, three female) with moderate-to-advanced PD were studied. Before surgery, all patients suffered from one or more motor complications (wearing-off and on-off phenomena, dyskinesias). All patients had Hoehn and Yahr stage 3 or 4 in off-drug condition and were evaluated with the Unified Parkinson's Disease Rating Scale (UPDRS). The follow-up time ranged between 12 and 20 [month]s (mean: 14±2.94 [month]s). STN was identified through CT and MRI scans. STN lesions were performed unilaterally using thermocoagulation.

Results: Subthalamotomy induced a marked motor improvement contralaterally, ipsilaterally and axially. Mean ?on? time total UPDRS and motor scores decreased from 61.7±19.2 to 31.6±15.7 (p=0.001) and from 26.1±11.1 to 15±11.1 (p=0.02), respectively. Total ?on? time period increased by 50% in eight patients but did not change in the remaining three. Nine patients had disabling dyskinesia and six of these patients improved significantly (mean 40%, UPDRS part IV). Compared to pre-surgical doses, the levodopa-equivalent dose was reduced in eight patients, increased in one and left unchanged in the remaining two patients during the post-operative phase. Notably, only one out of eleven patients developed hemiballismus. Hemiballistic movements emerged immediately after the ablation and were ameliorated under treatment within two weeks after surgery.

Conclusion: We conclude that subthalamotomy is a safe and effective treatment for moderate-to-advanced PD. In cases in which DBS is not feasible, subthalamotomy may be considered as an alternative procedure.

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