BUNDLE BRANCH BLOCKS

Question 1

describe William morrow

Answer 1

LBBB: W in V1, M in V6
RBBB: M in V1, W in V6

Question 2

characteristics of LBBB

Answer 2

-wide QRS
-deep S wave in V1-3 (W)
- tall notched R in V5-6
-ST and T changes
- LAD (+ I, - AVF)

Question 3

RBBB characteristics

Answer 3

RSR at V1-3 (second R taller and wider)
-wide slurred s in V6
-normal axis
-wide QRS

Question 4

why is the QRS slurred in RBBB

Answer 4

RBB blocked, RV will depol after the LV, and it occurs slowly, muscle fibre to muscle fibre, thus a slur that draws it out

Question 5

V1 changes in RBB and why they occur

Answer 5

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

Question 6

LAFB leads to

Answer 6

LAD

Question 7

LPFB leads too

Answer 7

RAD

Question 8

RBBB plus LAD=

Answer 8

RBBB with LAFB

Question 9

RBBB plus RAD=

Answer 9

LPFB