Fascicular Blocks

Question 1

L anterior Fascicular Blocks

Answer 1

LAD -45 to -90
I+ aVL= small Q & Tall R
II, III, aVF= small R & Deep S
QRS: normal or slightly prolonged
aVL= Prolonged R wave peak time
QRS voltage increased Limb leads

Question 2

L posterior Fascicular Blocks

Answer 2

RAD
I+ aVL= small R & Deep S
II, III, aVF= small Q + tall R
QRS 80-110 ms
aVF= prolonged R wave peak time
QRS voltage increased in Limb leads
No evidence RVH
No evidence other cause RAD