“…In the present case, practically all the ECG criteria proposed by our group in 2011 were fulfilled, including the R-wave voltage in V1 (≥5 mm) and V2 (>15 mm), S wave depth in V1 (<5 mm), R/S ratio in V2 > 2, and absence of q waves in V5, V6 and I [1]. The criteria from the Brazilian guidelines require R-wave height of ≥15 mm in V1 or V2 and V3, which is not fulfilled in this case [2,4]. After percutaneous coronary intervention (PCI), the left bifascicular block (LSFB+LAFB) disappeared (Figure 4).…”