Intraventricular Conduction: Difference between revisions

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==Left Anterior Fascicular Block (LAFB)==
==Left Anterior Fascicular Block (LAFB)==
{{Box|
{{Box|
;Criteria for left anterior fascicular block
;Criteria for Left Anterior Fascicular Block
:Left axis deviation (<-30°)
#Frontal plane axis between −45° and −90°.
:No or very small S in lead I
#qR pattern in lead aVL.
:Normal small q in lead I
#R-peak time in lead aVL of 45 ms or more.
:S > R in leads II and III
#QRS duration less than 120 ms.
:No or very few QRS widening
These criteria do not apply to patients with congenital heart disease in whom left-axis deviation is present in infancy.
}}
}}
[[Image:LAHB.png|thumb|Left anterior hemiblock]]
[[Image:LAHB.png|thumb|Left anterior hemiblock]]

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