EKG

Question 1

Normal axis

Answer 1

0 to 90

Question 2

Left axis deviation

Answer 2

0 to -90

Question 3

Right axis deviation

Answer 3

90 to 180

Question 4

Extreme right axis deviation

Answer 4

180 to -90

Question 5

Left axis deviation is caused by

Answer 5

Inferior MI or LVH

Question 6

Right axis deviation is caused by

Answer 6

RVH, Lateral MI

Question 7

What pairs of leads make 90 degrees and can be used to determine axis?

Answer 7

I and AVF

III and AVL

Question 8

If I is positive and aVF is neg then the axis is

Answer 8

left

Question 9

If both I and aVF are positive then the axis is

Answer 9

normal

Question 10

If I is neg and aVF is positive the axis is

Answer 10

Right

Question 11

Tall or peaked t waves in II III and aVF

Answer 11

R atrial enlargment

Question 12

Biphasic p in V1

Answer 12

L atrial enlargement

Question 13

Criteria of q wave

Answer 13

> 1 small box and/or 1/3 of total QRS

Question 14

Q wave indicates

Answer 14

Transmural infarct

Question 15

Poor R wave progression indicates

Answer 15

Lateral MI

Question 16

Very deeply negative V1 and very positive V6 indicates

Answer 16

LVH

Question 17

T wave inversion causes (3):

Answer 17

Old MI
Pericarditis (chronic, diffusely)
Chronic myocardial disease

Question 18

Peaked T waves indicate (2):

Answer 18

Hyperkalemia (diffusely)

First stages of MI (localized)

Question 19

Flattened T waves indicate:

Answer 19

Hypokalemia