Figure 4 Electrocardiogram patterns associated with Brugada syndrome Figure 4 | Electrocardiogram patterns associated with Brugada syndrome. a | Spontaneous type 1 Brugada pattern. The straight arrow points to PR prolongation, whereas the curved arrow shows type 1 ST-segment elevation. b | Type 2 Brugada pattern with QRS fragmentation. The stars indicate the sites of QRS fragmentation, and the arrows indicate type 2 ST-segment elevation. Sieira, J. et al. (2016) Pathogenesis and management of Brugada syndrome Nat. Rev. Cardiol. doi:10.1038/nrcardio.2016.143