ABC | Volume 112, Nº6, June 2019

Case Report Riera et al Atrial and ventricular infarction: P-loop shape Arq Bras Cardiol. 2019; 112(6):803-806 9. BernalE,Bayes-GenisA,Ariza-SoleA,FormigaF,VidanMT,Escobar-Robledo LA, et al. Interatrial block, frailty and prognosis in elderly patients with myocardial infarction. J Electrocardiol. 2018;51(1):1-7. 10. Saremi F, Abolhoda A, Ashikyan O, Milliken JC, Narula J, Gurudevan SV, et al. Arterial supply to sinuatrial and atrioventricular nodes: imaging with multidetector CT. Radiology. 2008;246(1):99-107; discussion 8-9. 11. AriyarajahV,FernandesJ,ApiyasawatS,SpodickDH.Angiographic localization ofpotentialculpritcoronaryarteriesinpatientswithinteratrialblockfollowinga positive exercise tolerance test. Am J Cardiol. 2007;99(1):58-61. 12. Yamazaki M, Morgenstern S, Klos M, Campbell K, Buerkel D, Kalifa J. Left atrial coronary perfusion territories in isolated sheep hearts: implications for atrial fibrillation maintenance. Heart Rhythm. 2010;7(10):1501-8. This is an open-access article distributed under the terms of the Creative Commons Attribution License 806