Intro to the 12-lead EKG interpretation

Question 1

bipolar

Answer 1

I, II, III, avF, aVL, aVR

Question 2

unipolar

Answer 2

V1-V6

Question 3

septal wall and RV

Answer 3

V1&V2

Question 4

anterior surface of the heart

Answer 4

V3& V4

Question 5

LV

Answer 5

V5 & V6

Question 6

inferior portion of the heart

Answer 6

II, III, avF

Question 7

high lateral portion of the heart

Answer 7

I, aVL

Question 8

Normal QRS axis –

Answer 8

positive I and II, negative III

Question 9

L.A.D –

Answer 9

positive I, negative II, negative III

Question 10

R.A.D –

Answer 10

negative I, negative II, positive III

Question 11

Left bundle branch block –

Answer 11

Away from V1 and toward V6, widended QRS

Question 12

Right bundle branch block –

Answer 12

Towards V1 and Towards V6, widened QRS

Question 13

Distinguish right and left ventricular hypertrophy on the ECG

Answer 13

Hypertrophy – more conduction, thus more voltage on ekg. V5,6 have greater voltage in left ventricular hypertrophy. V1,2 greater voltage in right ventricular hypertrophy

Question 14

identifiy the EKG findings in acute coronary syndromes and pericarditis

Answer 14

inverted T waves