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Yıl:1997; Cilt: 8; Sayı: 4>> Özet
Türk Psikiyatri Dergisi; 1997;8(4):288-291
Yaygın Anksiyete Bozukluğunda Otonomik İşlev Değişiklikleri
K TOPALKARA, SE DÜNDAR, A ÇORAPÇIO?LU, A AKYÜZ, S TOPAKTAŞ
Anksiyete bozukluklarında otonomik sinir sistemi işlevlerindeki değişiklikler özellikle panik bozukluğu olan hastalarda ayrıntılı olarak incelenmiştir. Anksiyeteye eşlik eden otonomik işlev değişikliklerini incelemek için yaygın anksiyete bozukluğu olan hastalarda sempatik ve parasempatik sistem işlevleri elektrofizyolojik yöntemlerle (sempatik deri yanıtı ve RR interval varyasyonu testleri) değerlendirildi. Yaygın anksiyete bozukluğu tanısı alan 33 kişilik hasta grubu ve bu tanı kriterlerini karşılamayan benzer yaş dağılımlı 29 kişiden oluşan kontrol grubunda sempatik sinir sistemi işlevini değerlendirmek için üst ve alt ekstremiteden sempatik deri yanıtları kaydedildi. Vagal parasempatik sistem işlevini değerlendirmek için istirahat ve derin solunum sırasında RR interval varyasyonu incelendi. Sempatik deri yanıtı latans ortalamaları hasta ve kontrol grubu arasında anlamlı farklılık göstermez iken, hasta grubunda hem derin soluma ve istirahat sırasındaki RR interval varyasyonu değerleri ortalaması (20.16±7.64) hem de derin soluma ve istirahat sırasındaki RR interval varyasyonu değerleri arasındaki fark (6.73±6.80) kontrol grubuna kıyasla (26.40±8.35 ve 11.38±5.68) düşük bulundu (p<0.05). Bu bulgular, anksiyete sırasında vagal parasempatik aktivitenin baskılandığı varsayımını destekleyici niteliktedir.

Changes in Autonomic Functions in Generalized Anxiety Disorder
Alterations in autonomic nervous system functions in anxiety disorders have been investigated in patients with panic disorder. To investigate the alterations in autonomic functions during anxiety, the functions of sympathetic and parasympathetic system in patients with generalized anxiety disorders were evaluated by electrophysiological methods (symphathetic skin response and RR interval variation tests). In 33 patients, diagnosed as generalised anxiety disorder, and age matched 29 control cases, sympathetic skin responses were recorded on both upper and lower extremity to evaluate the sympathetic nervous system function, and RR interval variation test were done during both resting and deep breathing to evaluate the vagal parasympathetic function. The latency means of sympathetic skin responses were not significantly different between patients and controls, but both RR interval variation values during deep breathing (20.16±7.64) and the difference between RR interval variation values during deep breathing and resting (6.73±6.80) were found lower in patients than controls (26.40±8.35 and 11.38±5.68) (p<0.05). These findings have suggested the withdrawal of vagal parasympathetic activity during anxiety.

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