Adjacent QT dispersion: A good predictor of ventricular arrhythmias after myocardial infarction

• Authors: Mohammad Ostovan , Shahdad Khosropanah , Shohreh Hooshmand
• Languages of publication: EN

Abstracts

EN

The 12-lead surface electrocardiogram adjacent QTc dispersion, which is the maximum difference of corrected QT interval between two adjacent leads, is a simple method to determine regional variation in repolarization and refractoriness. The aim of this study is to evaluate adjacent QTc dispersion as a marker of susceptibility to ventricular arrhythmias after myocardial infarction. A total of 135 consecutive patients with acute myocardial infarction were enrolled in the study. Adjacent QTc, measured by lens magnifier, was calculated on the first, second and third days after acute myocardial infarction. On the second day after acute myocardial infarction, adjacent QTc dispersion was significantly greater in patients with ventricular arrhythmias (P < 0.001). Adjacent QTc dispersion on the first and fifth day after acute myocardial infarction was not associated with development of ventricular arrhythmias. On the second day after acute myocardial infarction, adjacent QTc dispersion is a simple and feasible method for prediction of ventricular arrhythmias.

Keywords

EN

Myocardial Infarction; QT Dispersion; Ventricular Arrhythmia

• Publisher: De Gruyter Open
• Journal: Open Medicine
• Year: 2008
• Volume: 3
• Issue: 2
• Pages: 179-182

Dates

published

1 - 6 - 2008

online

9 - 4 - 2008

Contributors

author

Mohammad Ostovan

• Cardiology Department, Shiraz University of Medical Sciences, Shiraz, Iran

author

Shahdad Khosropanah

• Cardiology Department, Shiraz University of Medical Sciences, Shiraz, Iran

author

Shohreh Hooshmand

• Pulmonology Department, Shiraz University of Medical Sciences, Shiraz, Iran

References

• [1] Antman E.M., Braunwald E., Acute myocardial infarction. In: Braunwald E., (Ed.), Heart Disease: a textbook of cardiovascular medicine, 5th edition. W.B. Saunders., 1997, 1184–1288
• [2] Engelstein E.D., Zipes D.P., Sudden cardiac death. In: Hurst W.J., (Ed.), Hurst’s the heart, arteries and veins., 9th Edition, McGraw Hill, 1998, 1081–1112
• [3] Pogwizd S.M., Corr P.B., Mechanisms underlying the development of ventricular fibrillation during early myocardial ischemia, Circ Res., 1990, 66, 672–695
• [4] Zaputović L., Mavrić Z., Zaninović-Jurjević T., Matana A., Bradić N., Relationship between, QT dispersion and the incidence of early ventricular arrhythmias in patients with acute myocardial infarction, Int. J. Cardiol., 1997, 62, 211–216 http://dx.doi.org/10.1016/S0167-5273(97)00226-X[Crossref]
• [5] Paventi S., Bevilacqua U., Parafati M.A., Di Luzio E., Rossi F., Pelliccioni P.R., QT dispersion and early arrhythmic risk during acute myocardial infarction. Angiology, 1999, 50, 209–15 http://dx.doi.org/10.1177/000331979905000305[Crossref]
• [6] Higham P.D., Furniss S.S., Campbell R.W., QT dispersion and component of QT interval in ischemia and infarction, Br. Heart J., 1995, 73, 32–36 http://dx.doi.org/10.1136/hrt.73.1.32[Crossref]
• [7] Yunus A., Gillis A.M., Duff H.J., Wyse D.G., Mitchell L.B., Increased precordial QTc dispersion predicts ventricular fibrillation during acute myocardial infarction, Am. J. Cardiol., 1996, 78, 706–8 http://dx.doi.org/10.1016/S0002-9149(96)00405-5[Crossref]
• [8] Hohnloser S.H., van de Loo A., Arendts W., Zabel M., Just H., The surface ECG as a parameter of increased electrical vulnerability in acute ischemia, Z. Kardiol., 1993, 82, 678–82
• [9] Xiang H., The relationship between increased QT dispersion of acute myocardial infarction and ventricular fibrillation, Zhonghua Xin Xue Guan Bing Za Zhi, 1993, 21, 282–3
• [10] Aksoyek S., QT dispersion in survivors of acute myocardial infarction and ventricular fibrillation; implication for life threatening arrhythmias, PACE, 1995, 18, 1125
• [11] Leitch J., Basta M., Dobson A., QT dispersion dose not predict early ventricular fibrillation after acute myocardial infarction, Pacing Clin. Electrophysiol., 1995, 18, 45–48 http://dx.doi.org/10.1111/j.1540-8159.1995.tb02474.x[Crossref]
• [12] Bogun F., Chan K.K., Harvey M., Goyal R., Castellani M., Niebauer M., et al., QT dispersion in nonsustained ventricular tachycardia and coronary artery disease. Am. J. Cardiol., 1996, 77, 256–259 http://dx.doi.org/10.1016/S0002-9149(97)89389-7[Crossref]
• [13] Restivo M., Gough W.B., el-Sherif N., Ventricular arrhythmias in the subacute myocardial infarction period. High-resolution activation and refractory patterns of reentrant rhythms, Circ. Res., 1990, 66, 1310–1327

Identifiers

DOI

10.2478/s11536-007-0055-x