Cardiac Dysrhythmia Recognition

Question 1

Which valve separates the right atrium and right ventricle?

Answer 1

Tricuspid valve

Question 2

What separates the right ventricle and the pulmonary arteries?

Answer 2

Pulmonic valve

Question 3

What separates the left atrium and left ventricle?

Answer 3

Mitral valve

Question 4

What separates the left ventricle and the aorta?

Answer 4

Aortic valve

Question 5

This part of the nervous system prepares the body to “fight or flight”

Answer 5

Sympathetic nervous system

Question 6

This part of the nervous system regulates calmer functions, “rest and Digest”

Answer 6

Parasympathetic nervous system

Question 7

The sympathetic system activates this type of cardiac receptors

Answer 7

Beta-1 adrenergic receptors

Question 8

The parasympathetic system activates this type of receptor

Answer 8

Cholinergic receptors

Question 9

Typical rate of the SA node

Answer 9

60-100 bpm

Question 10

Typical rate of the AV node

Answer 10

40-60 BPM

Question 11

The AV node is responsible for ____ rhythm

Answer 11

Junctional rhythm (AV node)

Question 12

Why does the junctional Rhythm have a slow conduction time?

Answer 12

To allow time for the Atria to contract an empty contents into the ventricles

Question 13

What is the rate of the purkinje system?

Answer 13

20-40 BPM (no one cares)

Question 14

The R on T phenomenon is bad news. Why?

Answer 14

Vtach!

Question 15

P wave represents ___ of the Atria.

Answer 15

Depolarization

Question 16

What does a normal P wave look like? Where does it originate?

Answer 16

Normal P wave:

Smooth and round, originates and sinus node

Question 17

What does the PRI represent?

Answer 17

PRI represents the time from the onset of atrial depolarization to the onset of ventricular depolarization

Question 18

What is a normal PRI?

Answer 18

0.12 - 0.20 seconds (normal PRI)

Question 19

If an Impulse is conducted from the Atria to the ventricles through a conduction pathway that bypasses the AV node, how does this present on ECG?

Answer 19

Shorter PRI

Question 20

This represents the conduction of electrical impulses from the Bundle of His throughout the ventricular myocardium

Answer 20

The QRS complex

Question 21

What is the key factor when evaluating a QRS complex?

Answer 21

The appearance of the QRS doesn’t matter, the key factor is the TIME of the complex.

Question 22

The point where the QRS ends is known as what?

Answer 22

J point

Question 23

What is a normal QRS interval?

Answer 23

0.10 or less

Question 24

What is the significance of a wide QRS complex?

Answer 24

Bundle branch block