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Yıl:2004; Cilt: 11; Sayı: 3>> Özet
TAM METİN
Çocuk ve Gençlik Ruh Sağlığı Dergisi; 2004;11(3):117-122
Dikkat Eksikliği Hiperaktivite Bozukluğu Tedavisinde Metilfenidat Kullanımının Zaman Bağımlı Kalp Hızı Değişkenliği Üzerine Etkisi
İT Özcan, F Toros, H Pekdemir, D Çiçek, A Çamsarı, M Yurttaş, B Akçay, İ Konukçu
Amaç: Dikkat eksikliği hiperaktivite bozukluğu (DEHB) tanısı konan ve metilfenidat kullanılan hasta grubunda klinik anlam ifade eden önemli kardiak etkilenim sık olmamakla beraber bildirilmiş olup, metilfenidatın sempatomimetik etki ile sistolik ve diastolik kan basıncında ve kalp hızında artış yaptığı birçok çalı.mada gösterilmiştir. Bizim bu çalışmayı planlayıp yapmamızdaki temel amaç DEHB tanısı konan hasta populasyonunda metilfenidatın Holter parametreleri ile zaman bağımlı kalp hızı değişkenliği (KHD) (time domain heart rate variability) üzerindeki etkinliğinin araştırılmasıydı. Yöntem: Bu çalışmaya Mersin Üniversitesi Tıp Fakültesi Çocuk Psikiyatrisi Polikliniğine Ocak 2003-Ocak 2004 tarihleri arasında ilk kez başvuran, 42 DEHB tanılı ve 31 DEHB tanısı konmayan çocuk ve ergen alındı. DEHB tanılı 42 olgudaki zaman bağımlı KHD bulguları DEHB tanısı konmayan ve herhangi bir ilaç tedavisi almayan 31 çocuk ve ergenin bulguları ile karşılaştırıldı. Sonuçlar: Her iki grubun bazal değerleri arasında belirgin farklılık yoktu. Ancak 12 hafta süre ile ortalama 10 mg metilfenidat kullanımı sonrası hastalarda zaman bağımlı KHD parametrelerinin, tedavi öncesi ve kontrol grubuna göre azaldığı saptandı. Tartışma: Metilfenidat, DEHB tanılı çocuk ve ergenlerde zaman bağımlı KHD parametrelerini azaltmaktadır. Bu nedenle özellikle aritmi gelişme riski bulunan olan olgularda ve metilfenidat ile birlikte merkezi sinir sistemini etkileyen ilaçlarla birlikte kullanımında oluşabilecek yan etkileri saptamak için yakın kardiyak izlem gereklidir.
The Effect of Methylphenidate on Time Domain Heart Rate Variability in the Treatment of Attention Deficit and Hyperactivity Disorder
Objective: Although not so frequent, clinically meaningful cardiac adverse effects, including increase in heart rate, systolic and diastolic blood pressure with its sympatomimetic effect, has been shown in a number of studies with the use of methylfenidate in attention deficit and hyperactivity disorder (ADHD). The aim of this study was to assess the effect of methylphenidate on time domain heart rate variability (HRV) in cases with ADHD. Method: 42 child and adolescent patients with ADHD and 31 non ADHD cases who have been attended for the first time to University of Mersin Faculty of Medicine, Department of Child Psychiatry between January 2003 - January 2004 were included in the study. Time domain HRV findings of 42 patients with ADHD were compared with findings of 31 children and adolescents who are not on any medical treatment. Results: No difference was found between the groups for the basal parameters. Following 12 weeks of treatment with an average of 10 mg methylphenidate use, time domain HRV parameters in ADHD group declined compared to basal parameters and the control group. Conclusion: Methylphenidate decreased the time domain HRV parameters in ADHD group. Therefore, close cardiac follow-up is necessary for the detection of side effects of methylphenidate especially in patients who are under risk for developing cardiac arythmias and in patients using methylphenidate together with drugs effecting central nervous system.

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