Dergi Ara >>
Yıl:2002; Cilt: 2; Sayı: 4>> Özet
Demans Dergisi; 2002;2(4):97-104
Hafif Kognitif Bozukluk
M Bakar
Uludað Üniversitesi Tıp Fakültesi Nöroloji ABD, Bursa
Sağlıklı yaşlılar arasında kognitif durumda progresif
bir azalmaya maruz kalacak gurubu tanımlayabilmek
pratik açıdan çok önemlidir. Kısa dönemde
bu bireyleri tanımlamak hasta ve aileleri için değerli
prognostik bilgiler sağlar. Bu bireylerin tanımlanmasında
anahtar özellik normal yaşlanma ile
demans arasındaki dönemde kognitif düşüş aşamasının
tanınmasıdır .
Entellektüel yetilerde sosyal veya mesleki açıdan
fonksiyonu bozacak kadar progresif kayıp
olduğunda demans ortaya çıkar. Demans olarak
tanımlanmaya yetmeyen kognitif bozukluğu olan
bireyler vardır. Bu bireyler, bir tarafta normal
yaşlanma sürecindeki bireyler ile bir taraftan da
demansı olan bireyler arasında bir ara bölgeyi
oluşturmaktadır.
''Yaşla ilişkili hafıza bozukluğu'' terminolojisi normal
yaşlanma sürecindeki bireyleri işaret etmektedir.
''Kognitif bozukluğu olan ancak demansı
olmayan'' terminolojisi bazı bireylerde demans
tanısını koymaya yetmeyecek derecede kognitif
bozukluk olabileceği gerçeğini göstermektedir.
''Hafif kognitif bozukluk'' (HKB)=Mild Cognitive
Impairment (MCI) normal yaşlanma ve demans
arasındaki grup için kullanılmaktadır ki, bu dönem
demans gelişimi için artmış riskteki populasyonu
tanımlar. HKB, yaşlanma ile ilişkili
kognitif bozulma ile demans arasında çok iyi
tanımlanamamış bir sendromdur. Bireyin yaşı ile
uyumlu olmayan hafıza bozuklukları HKB için
karakteristik olup hafıza bozukluklarına demansta
olduğu gibi diğer kognitif yetilerde azalma eşlik
etmemektedir. Pekçok tanı kriteri ortaya konan
HKB olgularının hepsinin olmasa da bir kısmının Alzheimer hastalığının (AH) predemans safhası
olabileceği düşünülmektedir.

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