Significance and mechanisms of a prolonged QT interval in acute myocardial ischemia

Authors

  • Juan M. Cruz Elizundia Hospital Provincial Universitario Cardiocentro Ernesto Guevara
  • Raimundo Carmona Puerta Hospital Provincial Universitario Cardiocentro Ernesto Guevara
  • Damián Pérez Cabrera Hospital Universitario Arnaldo Milián Castro

Keywords:

QT interval, acute coronary syndrome, acute myocardial infarction

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References

1. Cruz Elizundia JM, Carmona Puerta R, Pérez Cabrera D. QT prolongado que precede a la corriente de lesión en el infarto. CorSalud [Internet]. 2013 [citado 18 Dic 2012];5(1): Disponible en: http://www.corsalud.sld.cu/pdf/2013/v5n1a13/es/qt1.pdf

2. Cinca J, Figueras J, Tenorio L, Valle V, Trenchs J, Segura R, et al. Time course and rate dependence of QT interval changes during noncomplicated acute transmural myocardial infarction in human beings. Am J Cardiol.1981;48(6):1023-8.

3. Jiménez Candil J, González Matas JM, Cruz González I, Hernández Hernández J, Martín A, Pabón P, et al. Pronóstico hospitalario del síndrome coro-nario agudo sin elevación del segmento ST determinado por una nueva escala de riesgo integrada por variables electrocardiográficas obtenidas al ingreso. Rev Esp Cardiol. 2010;63(7):851-5.

4. Schwartz PJ, Wolf S. QT interval prolongation as predictor of sudden death in patients with myo-cardial infarction. Circulation. 1978;57(6):1074-7.

5. Gadaleta F, Llois S, Sinisi V, Quiles J, Avanzas P, Kaski J. Prolongación del intervalo QT corregido: nuevo predictor de riesgo cardiovascular en el síndrome coronario agudo sin elevación del ST. Rev Esp Cardiol. 2008;61(6):572-8.

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7. Patel C, Burke JF, Patel H, Gupta P, Kowey PR, Antzelevitch C, Gan-Xin Y. Is there a significant trans-mural gradient in repolarization time in the intact heart? Cellular basis of the T Wave: a century of controversy. Circ Arrhythm Electrophysiol. 2009; 2(1):80-8.

8. Chauhan VS, Tang AS. Dynamic changes of QT interval and QT dispersion in non-Q-wave and Q-wave myocardial infarction. J Electrocardiol. 2001; 34(2):109-17.

9. Anyukhovsky EP, Sosunov EA, Rosen MR. Regional differences in electrophysiological properties of epicardium, midmyocardium, and endocardium: in vitro and in vivo correlations. Circulation. 1996; 94(8):1981-8.

10. Wit AL, Janse MJ. The ventricular arrhythmias of ischemia and infarction: Electrophysiological mechanisms. Armonk, NY: Futura Publishing Compa-ny; 2005.

11. Cascio W, Yan G, Kléber A. Passive electrical properties, mechanical activity, and extracellular potassium in arterially perfused and ischemic rabbit ventricular muscle. Effects of calcium entry blockade or hypocalcemia. Circ Res. 1990;66:1461-73.

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15. Shivkumar K, Deutsch NA, Lamp ST, Khuu K, Goldhaber JI, Weiss JN. Mechanism of hypoxic K loss in rabbit ventricle. J Clin Invest. 1997;100(7): 1782-8.

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Published

2013-01-04

How to Cite

1.
Cruz Elizundia JM, Carmona Puerta R, Pérez Cabrera D. Significance and mechanisms of a prolonged QT interval in acute myocardial ischemia. CorSalud [Internet]. 2013 Jan. 4 [cited 2025 Sep. 11];5(1):130-2. Available from: https://revcorsalud.sld.cu/index.php/cors/article/view/1048

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Vol. 5 No. 1 (2013)

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