Ecgs

Question 1

What leads show the anterior part of the heart?

Answer 1

V3 and v4

Question 2

What leads show the lateral part of the heart?

Answer 2

V5, V6, L1 and AvL

Question 3

What leads show the inferior part of the heart?

Answer 3

L2, L3 and AvF

Question 4

What leads show the posterior part of the heart?

Answer 4

Reciprocal changes in lead V1 to V4

Question 5

What are the parameters for a pathological Q wave?

Answer 5

25% amplitude of R wave and >1mm (0.04) wide

Question 6

What is the difference between Sinus arrest and SA exit block?

Answer 6

SA exit block will generate a P wave inline with P-P interval

Question 7

What are the firing rates for the SA node, atrial Cells, AV node, Bundle branches?

Answer 7

SA 60 to 100
Atrial 55 to 60
AV node 45 to 50
Bundle branch 40 to 45

Question 8

What are the characteristics of a RBBB?

Answer 8

V1: RSr pattern… Bunny ears

QRS 0.12 or greater

Question 9

What are the characteristics of a LBBB?

Answer 9

Rounded top or notched top. Wide QRS.

Question 10

What leads show the septal part of the heart?

Answer 10

V1 and V2

Question 11

Which areas of the heart are associated with a LAD block?

Answer 11

Septal, anterior, and lateral

Question 12

Which area of the heart is associated with a RCA block

Answer 12

Inferior

Question 13

Which area of the heart is associated with a circumflex block

Answer 13

Posterior