Dispersion of QT interval in premature ventricular beats is not an independent marker for inducible sustained ventricular tachycardia

Year 2006, , 7 - 10, 01.01.2006

Fatih Sinan Ertaş , Çağdaş Özdöl Timuçin Altın Yusuf Atmaca Ömer Akyürek Remzi Karaoğuz Güneş Akgün Muharrem Güldal Editörden Çetin Erol

https://doi.org/10.1501/Tipfak_0000000178

Abstract

Keywords

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Ventriküler prematüre atımların QT interval dispersiyonu indüklenebilir sürekli ventriküler takikardi için bağımsız bir gösterge değildir

Abstract

Amaç: 12 derivasyonlu EKG nin farklı derivasyonları arasında QT interval süresinde değişkenlik
birçok klinik durumda ventriküler aritmiler için bir risk göstergesi olarak öngörülürken, QTd-V nin
değeri henüz açık değildir. Çalışmanın amacı reentran ventriküler takiaritmilere (VT) duyarlılığı
olan hastaları belirlemede ventriküler premature atımlarda QT dispersiyonu’nun (QTd-V) değerini
araştırmaktır.
Gereç ve Yöntem: Elektrofizyolojik çalışma yapılmış 34 hastada indüklenebilir VT nin tahmini için
prekordiyal QTd-V, sinyal ortalamalı EKG de geç potansiyeller ve azalmış sol ventrikül ejeksiyon
fraksiyonu karşılaştırıldı.
Bulgular: İndüklenebilir VT li 12 hastadaki QTd-V (110±50 msec) VT nin indüklenemediği 22 hastadaki
QTd-V den (65±38 msec, p=0.006) daha büyük bulundu. Ejeksiyon fraksiyonu ve geç potansiyel
varlığının dahil edildiği çok değişkenli analiz QTd-V nin ventriküler takiaritmilere duyarlı
hastaları belirlemede bağımsız bir faktör olmadığını gösterdi.
Sonuç: Artmış QTd-V tek başına reentran ventriküler takiaritmilere duyarlılıkla ilintili olsa da, geç
potansiyeller ve sol ventrikül ejeksiyon fraksiyonu hesaba katıldığında ilave tanısal bilgi sağlamadığı
gözükmektedir.

Keywords

QT dispersiyon, ventriküler prematüre atım, elektrofizyolojik çalışma

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