Miller et al used a 12-lead electrocardiogram to identify the endocardial site of origin for infarct-associated ventricular tachycardia. The authors are from the University of Pennsylvania in Philadelphia.
Parameters:
(1) infarct location (anterior or inferior)
(2) bundle branch block
(3) axis (left superior, right superior, left inferior, right inferior)
(4) R-wave progression
Infarct Location
Bundle Branch Block
Axis
R-wave Progression
Specific Region
anterior
LBBB
left superior
no or late
anteroapical septum
anterior
LBBB
left or right inferior
any pattern
anteroapical septum
anterior
RBBB
right inferior
abrupt loss and dominant R wave
anteroapical septum
inferior
LBBB
left superior
increasing (growing)
inferobasal septum
inferior
RBBB
left or right superior
early or late reverse
inferobasal free wall
inferior
RBBB
right inferior
late reverse
inferolateral free wall
Any other pattern had either an inadequate number of patients in the group or no specific pattern.
To read more or access our algorithms and calculators, please log in or register.
