BUNDLE BRANCH BLOCKS Flashcards
1
Q
describe William morrow
A
LBBB: W in V1, M in V6
RBBB: M in V1, W in V6
2
Q
characteristics of LBBB
A
-wide QRS
-deep S wave in V1-3 (W)
- tall notched R in V5-6
-ST and T changes
- LAD (+ I, - AVF)
3
Q
RBBB characteristics
A
RSR at V1-3 (second R taller and wider)
-wide slurred s in V6
-normal axis
-wide QRS
4
Q
why is the QRS slurred in RBBB
A
RBB blocked, RV will depol after the LV, and it occurs slowly, muscle fibre to muscle fibre, thus a slur that draws it out
5
Q
V1 changes in RBB and why they occur
A
V 1 Is a right sided lead, so the last part of the QRS in a RBBB will be upright, rather than its normal negative
6
Q
LAFB leads to
A
LAD
7
Q
LPFB leads too
A
RAD
8
Q
RBBB plus LAD=
A
RBBB with LAFB
9
Q
RBBB plus RAD=
A
LPFB
