significance of axis deviation

Question 1

A normal variant Axis deviation can be seen in

right axis deviation

Answer 1

Tall, thin, people all

Question 2

right axis deviation can be seen in right

Answer 2

Right ventricular hypertrophy

Question 3

right axis deviation can be seen in lateral

Answer 3

Lateral myocardial infarction or Peri -infarction block

Question 4

right axis deviation can be seen in the de-

Answer 4

dextro cardia or right/left arm lead switch

Question 5

right axis deviation can be seen in this syndrome

Answer 5

Wolf - Parkinson -white or WPW syndrome

Question 6

right axis deviation can be seen in left

Answer 6

Posterior fascicular block

Question 7

Left axis deviation can be seen in

Answer 7

Left anterior hemiblock

Question 8

Left axis deviation can be seen in what syndrome?

Hint; this syndrome also shows up in right axsis deviation.

Answer 8

WPW

Question 9

Left axis deviation can be seen in inferior

Answer 9

Inferior myocardial infarction (Peri -infarction block)

Question 10

Left axis deviation can be seen in ventricular

Answer 10

Ventricular tachycardia

Question 11

Right axis deviation may be seen in

Answer 11

Pulmonary embolism

Question 12

Right axis deviation is indicated if the QRS complexes are predominatly downward in

Answer 12

lead 1

Question 13

Right axis deviation is common in

Answer 13

Healthy subjects particularly if they’re tall

Question 14

Right axis deviation is not important in a tall person unless there it is some evidence of

Answer 14

Right ventricle hypertrophy or the patient has had an MI (which would raise suspicion for left posterior hemiblock).

Question 15

Right ventricular hypertrophy is usually accompanied by

Answer 15

Right axis deviation

Question 16

Right axis deviation is associated mainly with

Answer 16

Pulmonary conditions that put a strain on the right side of the heart. This includes congenital heart disorders

Question 17

When the left ventricle becomes the hypertrophied, it exerts more influence on the QRS complex than the_____causing the axis to swing to the _____.

Answer 17

Right ventricle

Left

Question 18

The QRS complex becomes predominately negative in

Answer 18

Lead three

Question 19

Not significant until the QRS complex deflection is also predominately negative in

Answer 19

Lead two

Question 20

Although left axis deviation can be due to excess influence of an enlarged ventricle, in fact this axis change is usually due to a

Answer 20

Conduction defect rather than to increased bulk of the left ventricular muscle.

Question 21

The presence of axes deviation should alert you to look for

Answer 21

Signs of right and left ventricular hypertrophy

Question 22

A change in the access to the bite may suggest a

Answer 22

Pulmonary embolism

Question 23

But a change to the left may indicate

Answer 23

The conduction defect

Question 24

Because the left ventricle contains more muscle in the right, it has more influence on

Answer 24

The cardiac axis but with