EKG

Question 1

SR:

Answer 1

(+) p-wave in I, II & (-) p-wave in AVR

Question 2

LBBB:

Answer 2

QRS > 120

Wide, notched R waves in V5, V6, I & AVL (LV free wall–i.e., lateral leads)

Question 3

LAFB:

Answer 3

QRS < 120
LAD
I, AVL: qR
II, III, aVF: rS

Question 4

LPFB:

Answer 4

QRS < 120
RAD
I, AVL: rS
II, III, aVF: qR

Question 5

RBBB:

Answer 5

QRS > 100
Broad terminal (+) R' waves in V1, V2 & AVR

Question 6

LVH (Sokolow-Lyon):

Answer 6

(V1: S) + (V5/V6: R > or = 35mm) AND (AVL: R > or = 11mm)

Question 7

IVCD

Answer 7

QRS > 110

Typical RBBB/LBBB pattern NOT present

Question 8

Axis:

Answer 8

[I & AVF]
Normal: + & + 
LAD: + & - 
RAD: - & +
Extreme RAD: - & -

Question 9

2nd Deg, Mobitz Type I =

Answer 9

Wenckebach

physiologic during inc high vagal tone

Question 10

2nd Deg, Mobitz Type II =

Answer 10

Hay
all or none
2:1, etc.
anteroseptal MI
poor prognosis => CHB