ABC | Volume 110, Nº1, January 2018

Original Article Paixão et al Correlation of ECG with RM in hypertrophic cardiomyopathy Arq Bras Cardiol. 2018; 110(1):52-59 1. Correia EB, Borges Filho R. Cardiomiopatia hipertrófica. Rev Soc Cardiol Estado de São Paulo. 2011;21(1):21-9. 2. ElliottPM,AnastasakisA,BorgerMA,BorggrefeM,CecchiF,CharronP,etal.2014 ESCGuidelinesondiagnosisandmanagementofhypertrophiccardiomyopathy. EurHear J.2014;35(39):2733-79.doi:10.1093/eurheartj/ehu284. 3. Ryan MP, Cleland JG, French JA, Joshi J, Choudhury L, Chojnowska L, et al. The standard electrocardiogram as a screening test for hypertrophic cardiomyopathy. Am J Cardiol. 2015;76(10):689-94. PMID: 7572626. 4. 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Chen X, Zhao S, Zhao T, Lu M, Yin G, Jiang S, et al. T-wave inversions related to left ventricular basal hypertrophy and myocardial fibrosis in non-apical hypertrophic cardiomyopathy: a cardiovascular magnetic resonance imaging study. Eur J Radiol. 2014;83(2):297-302. doi: 10.1016/j. ejrad.2013.10.025. 14. ChenX,ZhaoT,LuM,YinG,XiangliW,JiangS,etal.Therelationshipbetween electrocardiographic changes and CMR features in asymptomatic or mildly symptomatic patients with hypertrophic cardiomyopathy. Int J Cardiovasc Imaging. 2014;30 Suppl 1:55-63. doi: 10.1007/s10554-014-0416-x. References Acknowledgments We thank Dr. Rodrigo Mello Lima for providing the images of cardiac resonance. Conclusion The importance of the ECG as an initial tool to assess patients with HCM is confirmed in this study, which evidenced electrocardiographic patterns that correlate with the location of hypertrophy on magnetic resonance imaging. The greater amplitude of the R wave in the leads V5 and V6, and the inversion of the T wave in the leads DI, V5 and V6, already reported in previous studies, were significantly related to apical hypertrophy. The presence of the strain pattern on ECG, when HCM is suspected, suggests apical hypertrophy on magnetic resonance imaging. Concentric hypertrophy was associated with wide R waves in DI and a greater mass of fibrosis on magnetic resonance imaging assessment. Author contributions Conception and design of the research: Paixão GMM, Veronesi HE, Silva HAGP, Alencar Neto JN, Maldi CP, Correia EB; Acquisition of data: Paixão GMM, Veronesi HE, Silva HAGP, Alencar Neto JN, Maldi CP, Aguiar Filho LF, França FFAC; Analysis and interpretation of the data: Paixão GMM, Veronesi HE, Silva HAGP, Alencar Neto JN, Aguiar Filho LF, França FFAC; Critical revision of the manuscript for intellectual content: Paixão GMM, Aguiar Filho LF, Pinto IMF, França FFAC, Correia EB. Potential Conflict of Interest No potential conflict of interest relevant to this article was reported. Sources of Funding There were no external funding sources for this study. Study Association This study is not associatedwith any thesis or dissertationwork. Ethics approval and consent to participate This article does not contain any studies with human participants or animals performed by any of the authors. 58