Combined QRS complex and T wave alternans — a new electrocardiographic phenomenon in long QT syndrome: a clinical observation
https://doi.org/10.15829/1560-4071-2024-6036
EDN: RMHMCY
Abstract
A previously undescribed electrocardiographic pattern is presented in a female patient with long QT syndrome in the form of combined QRS complex and T wave alternans. Possible electrophysiological mechanisms and prognostic value are discussed
About the Authors
L. M. Makarov
Federal Scientific and Clinical Center for Children and Adolescents
Russian Federation
Competing Interests:
Russian Federation
Competing Interests:
Moscow
A. G. Akopyan
Federal Scientific and Clinical Center for Children and Adolescents
Russian Federation
Russian Federation
Moscow
V. N. Komolyatova
Federal Scientific and Clinical Center for Children and Adolescents
Russian Federation
Russian Federation
Moscow
D. A. Besportochny
Federal Scientific and Clinical Center for Children and Adolescents
Russian Federation
Russian Federation
Moscow
References
1. Moss A. The Long QT interval syndrome. The American Journal of Cardiology 1997;20: p.17-19. doi:10.1016/s0002-9149(97)00116-1.
2. Schwartz PJ, Moss AJ, Vincent GM, Crampton RS. Diagnostic criteria for the long QT syndrome. An update. Circulation. 1993;88(2):782-4. doi:10.1161/01.cir.88.2.782.
3. Crotti L, Celano G, Dagradi F, Schwartz P. Congenital long QT syndrome. Orphanet J Rare Dis. 2008;3:18. doi:10.1186/1750-1172-3-18.
4. Zareba W, Moss AJ, le Cessie S, Hall WJ. T wave alternans in idiopathic long QT syndrome. J Am Coll Cardiol. 1994;23(7):1541-6. doi:10.1016/0735-1097(94)90653-x.
5. Surawicz B, Fisch C. Cardiac alternans: diverse mechanisms and clinical manifestations. J Am Coll Cardiol. 1992;20(2):483-99. doi:10.1016/0735-1097(92)90122-4.
6. Chinushi M, Hosaka Y, Washizuka T, et al. Arrhythmogenesis of T wave alternans associated with surface QRS complex alternans and the role of ventricular prematurity: observations from a canine model of LQT3 syndrome. J Cardiovasc Electrophysiol. 2002;13(6):599-604. doi:10.1046/j.1540-8167.2002.00599.x.
7. Moss AJ, Zareba W, Benhorin J, et al. ECG T-wave patterns in genetically distinct forms of the hereditary long QT syndrome. Circulation. 1995;92(10):2929-34. doi:10.1161/01.cir.92.10.2929.
8. Schwartz PJ, Priori SG, Spazzolini C, et al. Genotype-phenotype correlation in the long-QT syndrome: gene-specific triggers for life-threatening arrhythmias. Circulation. 2001;103(1):89-95. doi:10.1161/01.cir.103.1.89.
Supplementary files
Review
For citations:
Makarov L.M., Akopyan A.G., Komolyatova V.N., Besportochny D.A. Combined QRS complex and T wave alternans — a new electrocardiographic phenomenon in long QT syndrome: a clinical observation. Russian Journal of Cardiology. 2024;29(10S):6036. (In Russ.) https://doi.org/10.15829/1560-4071-2024-6036. EDN: RMHMCY
Views:
450
Email this article 