QT Dispersion Ratio in Patients With Unstable Angina Pectoris (A New Risk Factor?)

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Küçük Resim

Tarih

1997

Dergi Başlığı

Dergi ISSN

Cilt Başlığı

Yayıncı

CLINICAL CARDIOLOGY PUBL CO

Erişim Hakkı

info:eu-repo/semantics/openAccess

Özet

Background: QT dispersion has been shown to be associated with fatal arrhythmias and sudden death in coronary artery disease. A recent study indicated that marked QT dispersion in electrocardiograms (ECGs) obtained during acute ischemia demonstrated a significant correlation with ventricular fibrillation. Hypothesis: This study investigated the ECG parameters for repolarization (QT dispersion, corrected QT, corrected QT dispersion, and QT dispersion ratio) and their interrelation with acute ischemia. Methods: QT parameters as well as a newly developed repolarization index, QT dispersion ratio [(QT dispersion/RR interval)x100] were calculated digitally during rest and ischemia in 32 patients with coronary artery disease (rest angina, Braunwald class III). Results were correlated with clinical consequences, mainly arrhythmias, within a follow-up period of 5 +/- 2 days. Results: While most patients had an increase in all four parameters, only the QT dispersion ratio showed a significant difference when correlated with ventricular arrhythmias (p < 0.001,F ratio = 38). Conclusion: QT dispersion ratio appears to be a new and promising parameter in predicting ventricular arrhythmias in patients with acute ischemia.

Açıklama

Anahtar Kelimeler

QT Dispersion, Unstable Angina, Acute Ischemia

Kaynak

Clinical Cardiology

WoS Q Değeri

Q2

Scopus Q Değeri

Q2

Cilt

20

Sayı

6

Künye

Cin, V. G., Çelik, M., Ulucan, S., (1997). QT Dispersion Ratio in Patients with Unstable Angina Pectoris (A New Risk Factor?). Clinical Cardiology, 20(6), 533-535.