Cruz EJM, Carmona PR, Pérez CD

Language: Spanish
References: 18
Page: 130-132
PDF size: 205.70 Kb.

Text Extraction

To the Editor:

The electrocardiographic evolution in a patient with ST segment elevation acute myocardial infarction is reported in this issue. Preceding the current of injury (ST elevation), this patient experienced a huge QT prolongation with T wave inversion in multiple leads of the electrocardiogram (ECG). For this reason, it is important to comment, briefly, this interesting association.

REFERENCES

1. Cruz Elizundia JM, Carmona Puerta R, Pérez Cabre- ra 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 Gon-zález I, Hernández Hernández J, Martín A, Pabón P, et al. Pronóstico hospitalario del síndrome coro-nario agudo sin elevación del segmento ST deter-minado 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 sín-drome coronario agudo sin elevación del ST. Rev Esp Cardiol. 2008;61(6):572-8.

6. Jiménez Candil J, Luengo M. Intervalo QT e isque-mia miocárdica aguda: viejas promesas, nuevas evidencias. Rev Esp Cardiol. 2008;61(6):561-3.

7. Patel C, Burke JF, Patel H, Gupta P, Kowey PR, Ant-zelevitch 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 me-chanisms. Armonk, NY: Futura Publishing Compa-ny; 2005.

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

12. Bethell HW, Vandenberg JI, Smith GA, Grace AA. Changes in ventricular repolarization during aci-dosis and low-flow ischemia. Am J Physiol. 1998; 275(2 Pt 2):H551-61.

13. Kagiyama Y, Hill JL, Gettes LS. Interaction of aci-dosis and increased extracellular potassium on action potential characteristics and conduction in guinea pig ventricular muscle. Circ Res 1982;51(5): 614-23.

14. Spitzer KW, Hogan PM. The effects of acidosis and bicarbonate on action potential repolarization in canine cardiac Purkinje fibers. J Gen Physiol. 1979; 73(2):199-218.

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.

16. Kiyosue T, Arita M. Effects of lysophosphatidyl-choline on resting potassium conductance of isolated guinea pig ventricular cells. Pflugers Arch. 1986;406(3):296-302.

17. Undrovinas AI, Fleidervish IA, Makielski JC. Inward sodium current at resting potentials in single car-diac myocytes induced by the ischemic metabolite lysophosphatidylcholine. Circ Res. 1992;71(5):1231 - 41.

18. Burnashev NA, Undrovinas AI, Fleidervish IA, Ma-kielski JC, Rosenshtraukh LV. Modulation of car-diac sodium channel gating by lysophosphatidyl-choline. J Mol Cell Cardiol. 1991;23 Suppl 1:23-30.