best leads for Bundle branch block
v1 or v6
best leads for Anterior View
v3 or v4
best leads for septal activity
v1 or v2
best leads for lateral
I, avL, v5, v6
best leads for inferior
II, III, AVF
best leads for junctional rhythm
lead II
best leads for atrial activity
I, II, or Lewis Lead
best leads for Ventricular Ectopy
v1