Journals / Ankara Üniversitesi Tıp Fakültesi Mecmuası / 2005 / Cilt: 58 - Sayı: 1

QT ve P dispersiyonu

QT and P wave dispersion

Pages
42–46
Publication Date
2022-10-10
DOI
—
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

In this review, the measurement techniques, interpretation, clinical importance of QT dispersion and another related subject, P wave dispersion, are mentioned.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:Heterogeneity in refractoriness and conduction velocity is the main mechanism of reentrant ar-rhythmias.
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Key Findings & Data:The most commonly used index to calculate this QT dispersion is the difference between the longest and shortest QT intervals on the 12 lead ECG, which is often adjusted for heart rate as well as number of leads sampled.
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Conclusion & Impact:In this review, the measurement techniques, interpretation, clinical importance of QT dispersion and another related subject, P wave dispersion, are mentioned.
🔬Design:Review & Systematic Survey
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Heterogeneity in refractoriness and conduction velocity is the main mechanism of reentrant ar-rhythmias. One of the indexes which show the heterogeneity of ventricular refractoriness is QT dispersion, which is found in surface ECG leads. The most commonly used index to calculate this QT dispersion is the difference between the longest and shortest QT intervals on the 12 lead ECG, which is often adjusted for heart rate as well as number of leads sampled. Abnormally high QT dispersion has been correlated with risk of arrhythmic death in a variety of disorders (cardiac and noncardiac). Also, QT dispersion is an easy, practical and cheap parameter which has been correlated with efficacy and proarrhythmic potential of drug therapy. In this review, the measurement techniques, interpretation, clinical importance of QT dispersion and another related subject, P wave dispersion, are mentioned.

Özet

Refrakter periyodun ve iletim hızının heterojenitesi re-entran aritmilerin temel mekanizmasını oluşturur.Ventriküler refrakteritenin heterojenitesini gösteren indekslerden biri yüzey elektrökardiyogramından (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 basitpratiKucuz bir parametredir. Bu derlemede QT dispersiyonunun ölçümü, yorumu, klinik önemi ve diğer bir kavram olan P dispersiyonu anlatılmıştır.

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Cite This Article

LAFÇI, G., ULAŞ, M. M., ERGÜN, K., GEDİK, H. S., ÇAĞLI, K. (2022). QT ve P dispersiyonu. Ankara Üniversitesi Tıp Fakültesi Mecmuası, Cilt: 58 - Sayı: 1, 42–46. https://ajindex.com/articles/444020

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