Geçici İskemik İnme
Özet
Geçici iskemik atak (GİA), akut fokal beyin, omurilik veya retina iskemisinden kaynaklanan ve akut enfarktüs olmaksızın gelişen geçici bir nörolojik disfonksiyon durumu olup acil tıbbi bir müdahale gerektirir. Genellikle vasküler kaynaklı fokal nörolojik defisitler veya konuşma bozukluklarıyla ani şekilde baş gösteren bu tablo, tipik olarak bir saatten az sürer ve özellikle ilk 48 saat içinde gelişebilecek iskemik inme riskinin en ciddi habercisidir. Büyük arter aterotrombozu ve kardiyak emboli gibi süreçlerin rol oynadığı GİA sonrasında sonraki 3 ay içinde inme geçirme riski %20'lere ulaşabildiğinden, ABCD2 risk skorlaması yapılarak puanı yüksek hastaların acilen hastaneye yatırılması hayati önem taşır. Semptomların başlangıcından itibaren ilk 24 saat içerisinde difüzyon ağırlıklı MRG başta olmak üzere nörogörüntüleme, laboratuvar ve kardiyak değerlendirmelerin eksiksiz yapılması ve acil antitrombosit tedavinin başlanması, gelecekteki inme riskini %80 oranında azaltabilmektedir.
A transient ischemic attack (TIA) is a medical emergency characterized by a temporary state of neurological dysfunction caused by focal brain, spinal cord, or retinal ischemia without acute infarction. Typically lasting less than an hour and presenting suddenly with focal neurological deficits or speech impairment of vascular origin, TIA serves as a critical warning sign for a subsequent ischemic stroke, with the risk being highest during the first 48 hours. Since the risk of stroke within three months after a TIA reaches approximately 20%, implementing clinical risk stratifications like the ABCD2 score is crucial, and patients with high scores must be hospitalized immediately for observation. Initiating urgent neuroimaging—primarily diffusion-weighted MRI—along with cardiac and laboratory evaluations within the first 24 hours and administering immediate antiplatelet therapy can reduce the risk of future stroke by at least 80%.
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