1- anterior hemiblock:
– Axial deviation (AQRS) left over – 30 ° (or> – 45 °)
– Aspect qR in D1, rS aspect D2 and D3
– Duration of QRS normal or slightly elongated (<0.12 s)
2- hemiblock post:
– Right axis deviation beyond 110 °
– Aspect rS in D1; qR appearance in D2 and D3
– Normal QRS duration or low lying
