Axis

Question 1

The position of the mean QRS vector

Answer 1

Axis

Question 2

Normal axis

Answer 2

Points downward and to the left

Question 3

To determine axis deviation look at which leads

Answer 3

Lead I and AVF

Question 4

In lead I if the QRS is mainly positive (above the line) then the mean QRS axis points…

Answer 4

To the left. Towards the positive electrode on the patients left arm

Question 5

In the AVF lead if the QRS is mostly positive (upright) then the mean QRS vector is pointing…

Answer 5

Down towards the positive electrode on the patients left foot

Question 6

If the QRS in lead I is mostly negative (below the baseline) then the mean QRS vector points

Answer 6

To the right towards the negative electrode on the patients right arm. This is known as right axis deviation

Question 7

If the QRS is positive in lead I and negative in AVF this is…

Answer 7

Left axis deviation

Question 8

When the isoelectric QRS has rotated to leads V1 and V2 this is known as

Answer 8

Rightward rotation

Question 9

When the isoelectric QRS is found in leads V5 and V6 this is known as

Answer 9

Leftward rotation

Question 10

Axis deviation is in the

Answer 10

Frontal plane

Question 11

Axis rotation is in the

Answer 11

Horizontal plane