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Yıl:2000; Cilt: 10; Sayı: 3>> Özet
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Klinik Psikofarmakoloji Bülteni; 2000;10(3):129-132
Konversiyonlu hastalarda beyin yapısı uyarılmış işitme potansiyellerinin değerlendirilmesi
S Cüreoğlu, A Altındağ, Ü Osma, Ş Özen, F Meriç, İ Topçu
Dicle University, School of Medicine, Diyarbakır
maç: Konversiyonlu hastalarda suboptimal beyinsapı lezyonlarını belirlemek.

Yöntem: Bu çalışma konversiyon bozukluğu tanısı alan 37 hasta (25 kadın, 12 erkek) üzerinde yapıldı. Kontrol grubu yaş ve cins uyumlu 30 sağlıklı bireyden (22 kadın, 8 erkek) oluşturuldu. Konversiyon bozukluğu tanısı, DSM IV kriterlerine göre konuldu. Bu hastalardan beyinsapı uyarılmış işitme potansiyelleri konvansiyonel ve yüksek uyarı hızında kaydedildi. Beyinsapı uyarılmış işitme potansiyellerinin değerlendirilmesi; IIII, III-V ve I-V interpik intervallerini ve V. Dalga amplitüdünün ölçümlerini kapsamaktadır.

Bulgular: Saniyede 10 klik hızında I-III ve I-V interpik intervallerinde fark mevcuttu (p<0,05). Saniyede 50 klik hızında ise sadece I-III intervalinde fark gözlendi. Normal kontrol ortalamalarının 2.5 katı standart sapmasını aşan değerler anormal kabul edildiğinde 37 hastanın sadece birinde anormal beyinsapı uyarılmış işitme potansiyeli gözlendi.

Sonuç: Konversiyonlu hastalarda alt beyin sapı (koklear nükleus, superior oliver kompleks ve lateral lemnisküs) etkilenimi vardır.
Evaluation of brainstem auditory evoked responses in patients with conversion disorders
Objective: The aim of this study was to detect any suboptimal brainstem lesions in patients with conversion disorder.

Methods: This study included 37 patients (25 female, 12 male) with conversion disorder. Control's group included 30 healthy persons (22 female, 8 male). The diagnosis of conversion disorder was based on criteria of DSM IV. BAER was recorded at conventional and higher stimulus rate in these patients. The main BAER measurements analyzed were the I-III, III-V, and I-V interpeak intervals and the wave V amplitude.

Results: There was significant difference for I-III (p<0,05), I-V (p<0,05) interpeak latencies between patient and controls groups at 10/s click rate. The only I-III interval differed significantly at 50/s click rate. Abnormal BAER result was seen in only one of 37 patients at the clicks of 10/s and 50/s, when the values exceeding 2.5 standard deviations above the means of the normal controls were considered abnormal. No significant correlation was found between diseased period and BAER latencies.

Conclusion: The lower brainstem (cochlear nucleus, superior olivary complex and lateral lemniscus) has been affected in patients with conversion disorder.

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