QT and P wave dispersion QT ve P dispersiyonu

Yıl 2005, , 42 - 46, 01.01.2005

Kerim Çağlı Kumral Ergün Gökhan Lafçı Hikmet Selçuk Gedik Mahmut Mustafa Ulaş

https://doi.org/10.1501/Tipfak_0000000136

Öz

Anahtar Kelimeler

-

QT ve P dispersiyonu

Öz

Refrakter periyodun ve iletim hızının heterojenitesi re-entran aritmilerin temel mekanizmasını
oluşturur.Ventriküler refrakteritenin heterojenitesini gösteren indekslerden biri yüzey elektrokardiyogramından
(EKG) elde edilen QT dispersiyonudur. QT dispersiyonunu hesaplamada en çok
kullanılan yöntem 12 derivasyonlu EKG’de en uzun ve en kısa QT intervalinin farkının alınıp hıza
veya kullanılan derivasyon sayısına göre düzeltilmesidir.Anormal olarak artmış QT dispersiyonu
bazı hastalıklarda (kardiyak ve nonkardiyak) aritmik ölüm riskini artırır. QT dispersiyonu bazı ilaçların etkinlik ve proaritmik potansiyeli hakkında da fikir veren basit,pratik,ucuz bir parametredir.
Bu derlemede QT dispersiyonunun ölçümü, yorumu, klinik önemi ve diğer bir kavram olan P dispersiyonu
anlatılmıştır.

Anahtar Kelimeler

QT dispersiyonu, P dispersiyonu, aritmi

Kaynakça

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