ECG Axis

Question 1

What is the Normal Axis range?

Answer 1

0 to +90 degrees

Question 2

What range is considered Right Axis Deviation?

Answer 2

+90 to 180 degrees

Question 3

What range is considered Left Axis Deviation?

Answer 3

-30 to -90 degrees

Question 4

What range is considered Normal Axis with a possible Left Axis Deviation?

Answer 4

0 to -30 degrees

Question 5

What range is considered Extreme Axis Deviation?

Answer 5

-90 to 180 degrees

Question 6

What is seen on an ECG in a Normal Axis?

Answer 6

LEAD I and LEAD aVF are positive

Question 7

What is seen on an ECG in Left Axis Deviation?

Answer 7

LEAD I is positive

LEAD aVF is negative

Question 8

What is seen on an ECG in Right Axis Deviation?

Answer 8

LEAD I is negative

LEAD aVF is positive

Question 9

What is seen on an ECG in Extreme Axis Deviation?

Answer 9

LEAD I and LEAD aVF are negative

Question 10

Which artery is affected when changes of LEAD I, V5 and V6 are observed?

Answer 10

Circumflex artery

Question 11

Which artery is affected when changes of V1-4 are observed?

Answer 11

Left anterior descending

Question 12

Which artery is affected when changes of LEADS II, III and aVF are observed?

Answer 12

Right coronary artery

Question 13

Which infarct is suggested when changes of LEAD I, V5 and V6 are observed?

Answer 13

Lateral

Question 14

Which infarct is suggested when changes of V1-4 are observed?

Answer 14

Anteroseptal

Question 15

Which infarct is suggested when changes of LEAD II, III and aVF are observed?

Answer 15

Inferior

Question 16

Which infarct is suggested when changes of LEAD I, aVL and V1-6 are observed?

Answer 16

Anterolateral

Question 17

Which infarct is suggested when changes of V1-3 are observed?

Which arteries can be affected by this?

Answer 17

Posterior

Typically left circumflex but also right coronary