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Flashcards in Axis Deck (11):
1

The position of the mean QRS vector

Axis

2

Normal axis

Points downward and to the left

3

To determine axis deviation look at which leads

Lead I and AVF

4

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

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

5

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

Down towards the positive electrode on the patients left foot

6

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

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

7

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

Left axis deviation

8

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

Rightward rotation

9

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

Leftward rotation

10

Axis deviation is in the

Frontal plane

11

Axis rotation is in the

Horizontal plane