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Yıl:1999; Cilt: 36; Sayı: 3>> Özet
Nöropsikiyatri Arşivi; 1999;36(3):132-135
Sendrom X'li hastalarda Tc-99m HMPAO Beyin Perfüzyon SPECT'i
M Kaya, A Sarıkaya, F Özçelik, GD Altun, Ş Berkarda
Trakya Üniversitesi Tıp Fakültesi
Sendrom X in etyopatogenezi tam olarak anlaşılma­mış olmakla beraber, endotelyal fonksiyon bozuklu­ğuna bağlı, preateriolar miyokardiyal damarlarda va­sodilator rezervde azalma ile birlikte fonksiyonel ve yapısal değişiklikler suçlanmaktadır. Kardiyak send­rom Xli hastalarda nöroregülatuar bozukluklar, mig­ren gibi kalp dışı bulgular ve patolojik ağn duyumu gösterilmiştir. Bu çalışmada kardiyak sendrom Xli hastalarda beyin SPECTi yaparak beynin perfûzyon değişikliklerini göstermeyi amaçladık. Çalışmaya tipik göğüs ağrısı olan, egzersiz testi pozi­tif, hiperventilasyon ve ergonovin testi negatif, koroner angiografide normal koroner arterleri olan send­rom X tanısı konmuş 15 hasta dahil edildi. Hastala­rın nörolojik muayene ve bilgisayarlı beyin tomogra­fileri normal olarak değerlendirildi. Beyin SPECTi için hastalara 740 MBq (20 mCi) Tc-99m-HMPAO iv eriklikten 30 dakika sonra görüntüler kaydedildi. Tüm hastaların beyin SPECT görüntüleri görsel ola­rak değerlendirildi. 15 hastanın 8'inde bilateral pari­etal bölgede, 2 hastada sol parietal bölgede, 1 hasta­da bilateral parietotemporal bölgede, 2 hastada sol parietal bölgede, 1 hastada bilateral parietotemporal bölgede, 1 hastada rol parietotemporal ve 1 hastada sol frontoparietal bölgede azalmış beyin kan akımı iz­lendi. 15 hastanın 5'inde beyin SPECT görüntülerin­de perfûzyon bozukluğuna rastlanmadı. Sonuç olarak; Sendrom X'li hastalarda Tc99m-HMPAO beyin SPECTin izlenen hipoperfüze bölgele­rin subklinik dönemdeki patolojilere ait olabileceğini ve hastaların uzun dönemde nöropsikiyatrik yönden izlenmesi gerektiği düşünmekteyiz.
Tc-99m-HMPAO Brain Perfusion SPECT In Patients With Syndrome X
Aetiology and pathogenesis of cardiac syndrome X are not clear. There is evidence of a structural or functional alteration of prearterioler myocardial ves­sels with a reduced vasodilator reserve due to endot­helial dysfunction. Neuroregulatory abnormalities, extracardiac symptoms like migraine, and pathologic pain perception could be demonstrated in patients with cardiac syndrome X The aim of this study was to determine alterations in cerebral blood flow in pa­tients with cardiac syndrome X In this study, Tc-99m-HMPAO brain SPECT was car­ried out in 15 consecutive patients with sendrom X (6 male, 7 female, age 50.73 ± 8.57 yrs.). SPECT scans were performed after 30 min postinjection using a single-head gamma camera. All patients had normal brain CT and normal neurologic examination. Pati­ents with a history of cerebral ishemia or other known cerebral disorders were excluded. Brain SPECT scans were evaluated visually. Decreased bra­in perfusion on SPECT images were found in bilate­ral parietal regions in 8 patients, left parietal regions in 2 patients, bilateral parietotemporal regions in 1 patient, left parietotemporal regions in 1 patient, and left frontoparietal regions in 1 patient. 5 patients had normal brain SPECT images.
In conclusion, Brain perfusion defects may be related to subclinical neurologic abnormalities or psychologi­cal alterations in patients with syndrome X

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