Heart blocks

Question 1

This heart block is often seen a normal people

Answer 1

First degree block

Question 2

When you see this heart block, think about acute myocardial infarction and acute rheumatic fever as possible causes

Answer 2

First degree heart block

Question 3

What is the treatments for first degree heart block

Answer 3

No specific action is needed

Question 4

But usually indicates heart disease; often seen an acute myocardial infarction

Answer 4

Second degree heart block

Question 5

What kind of treatment does mOBITZ type two and Wenckebach require?

Answer 5

No specific treatment needed

Question 6

2:1, 3:1 or 4:1 block may indicate the need for

Answer 6

Temporary pacing, especially if the ventricular rate is slow

Question 7

Always indicates conducting tissue disease -more often fibrosis and ischemia

Answer 7

Third degree heart block

Question 8

Consider a temporary or permanent pacemaker for

Answer 8

Third degree heart block

Question 9

Think about an atrial septal defect

Answer 9

Right bundle branch block

Question 10

What is the specific treatment for right bundle branch block

Answer 10

No specific treatment is needed

Question 11

Think about aortic stenosis and ischemic disease

Answer 11

Left bundle branch block

Question 12

If the patient is asymptomatic, with a left bundle branch block what treatment is needed?

Answer 12

No action is needed

Question 13

If the patient has recently had severe chest pain, left bundle branch block may indicate what?

Answer 13

An acute myocardial infarction and intervention should be considered.

Question 14

Think about left ventricular hypertrophy and its causes. What could this be?

Answer 14

Left axis deviation

Question 15

Indicate severe conducting tissue disease.

Answer 15

Left axis deviation and right bundle branch block

Question 16

What treatment is indicated for left axis deviation and write bundle branch block?

Answer 16

No specific treatment is needed

Question 17

If the patient with left axis deviation and right bundle branch block has symptoms suggestive of intermittent or complete heart block what treatment is needed?

Answer 17

pacemaker

Question 18

Name that block!
If each wave of depolarization that originates in the SA node is conducted to the ventricles, but there is a delay somewhere along the conduction pathway then the PR interval is prolonged period this is called

Answer 18

First degree heart block

Question 19

First degree heart block is not in itself important but maybe a sign of

Answer 19

Coronary artery disease, acute rheumatic carditis, digoxin toxicity are electrolyte disturbances

Question 20

Sometimes excitation completely fails to pass through the AV node or the bundle of his. When this occurs intermittently, what is said to exist

Answer 20

Second degree heart block

Question 21

There are how many variations of second degree heart block

Answer 21

Three

Question 22

This form of second degree heart block shows a progressive lengthening of the PR interval and then failure of conduction of an eight real beat followed by a conducted beat with a shorter PR interval and then a repetition of this cycle. What is this?

Answer 22

Wenckebach or Mobitz type 1

Question 23

In this type of second degree heart block most beats are conducted with a constant PR interval that occasionally there is atrial depolarization without a subsequent ventricular depolarization this is called

Answer 23

Mobitz type 2 phenomenon.

Question 24

There may be alternate conducted and non conducted atrial beats (or one conducted atriall beat and then two or three non conducted beats), giving twice (or three or four times) as many P waves as if you are as complex as. This is called

Answer 24

2:1, 3:1, or 4:1

Question 25

The Wenckebach phenomenon is usually

Answer 25

benign

Question 26

Mobitz type 2 block and 2:1, 3:1, or 4:1 block may herald a

Answer 26

Complete or third degree heart block

Question 27

Complete heart block or third degree block is said to occur when atrial contraction is normal but no

Answer 27

Beats are conducted to the ventricles

Question 28

Is complete heart block always obvious but on 12 lead?

Answer 28

No. It is not always immediately

Question 29

Complete heart block may occur with as an acute phenomenon in patients with __________.

Answer 29

Myocardial infarction

Question 30

Can complete heartblock the chronic?

Answer 30

Yes, usually due to fibrosis around a bundle of his.

Question 31

Blocks of both bundle branches may result in

Answer 31

Third degree heart block

Question 32

In this type of block no conduction occurs down the right of the branch

Answer 32

Right bundle branch block

Question 33

In a right bundle branch block the septum is depolarized from which side?

Answer 33

Left side as usual this causes an R wave in the right ventricle lead V1 in a small Q wave in the left ventricle lead.