Cardiac Dysrythmias

Question 1

ECG shows not all QRS are preceded by a P-wave.

Answer 1

Ventricular and Atrial depolarization’s are initiated from different sites.

Question 2

Patient’s heart rate is 56 bpm without adverse symptoms. Name one thing to tell patient.

Answer 2

Avoid Valsalva maneuver as bearing down during a bowel movement can result in slowing of the HR.

Question 3

The ST segment

Answer 3

The point on an ECG where the QRS complex ends.

Question 4

The J point

Answer 4

The junction point between the QRS and the ST segment.

Question 5

ST depression

Answer 5

An elevated Digoxin level will show____on ECG?

Question 6

An ST elevation myocardial infarction (STEMI)

Answer 6

A thrombus formation resulting in complete occlusion of a major coronary vessel.

Question 7

Beginning of Q to end of T waves

Answer 7

Repolarization to Depolarization measurements

Question 8

P Wave

Answer 8

One for each QRS segment

Question 9

PR Interval

Answer 9

Consistently measuring 0.12 to 0.20 seconds

Question 10

QRS Complex

Answer 10

Measuring the Q, R, and S waves (

Question 11

T-Wave

Answer 11

Repolarization of Ventricle

Question 12

Non-STEMI

Answer 12

Ischemia-Injured (but salvageable) tissue.

Question 13

ST Segment Depression

Answer 13

Cardiac tissue injury

Question 14

Infarction

Answer 14

Irreversible Cell death

Question 15

MONA

Answer 15

Morphine, Oxygen, Nitroglycerin, Aspirin

Question 16

Preload

Answer 16

The passive stretching force exerted on ventricular muscle at the END of diastole

Question 17

Afterload

Answer 17

The amount of pressure the ventricles generate to overcome the higher pressure in the aorta.

Question 18

Hyperkalemia

Answer 18

Life-threatening condition which affects the heart.

Question 19

Cardiac Enzymes

Answer 19

Diagnostic data useful in the diagnosis of chest pain.

Question 20

Mitral Valve Opens

Answer 20

What occurs when the L. atrial pressure exceeds the L. ventricular pressure?

Question 21

Myocardial Perfusion

Answer 21

The primary goal of fibrinolytic therapy given for an acute MI is for?

Question 22

Depolarization

Answer 22

The interior of a cardiac cell becomes LESS negative

Question 23

Atrial Fibrilation

Answer 23

The most common dysrhythmia associated with mitral valve stenosis is?

Question 24

Supraventricular Tachycardia

Answer 24

The goal of therapy is to reduce the HR to allow increased diastolic filling time.

Question 25

Myocardial Infarction

Answer 25

The death of cells caused by occlusion of a coronary artery.

Question 26

Normal Sinus Rhythm

Answer 26

Rhythm begins in the SA node. An upright P wave prior to each QRS complex. P waves look alike. Constant PR interval. Regular atrial and ventricular rhythm.

Question 27

Sinus Bradycardia

Answer 27

The SA node fires at a slower rate. A HR

Question 28

Sinus Tachycardia

Answer 28

The SA node fires at a faster rate. A HR \> 100 bpm. May have ST depression due to fast rate.

Question 29

Sinus Arrythmia

Answer 29

The SA node fires irregularly, usually associated with breathing.

Question 30

Sinus Arrest

Answer 30

The pacemaker cells of the SA node fail to initiate an electrical impulse for more than one or more beats thus resulting in absent PQRST complexes on the ECG.

Question 31

Premature Atrial Complex

Answer 31

An irritable site within the atria fires before the next SA node impulse is expected to fire.

Question 32

Supraventrricular Tachycardia

Answer 32

The arrthymia begins above the bifurcation of the bundle of HIS

Question 33

Atrial Flutter

Answer 33

An ectopic atrial rhythm in which an irritable site fires regularly at a very rapid rate (250 - 450).

Question 34

Atrial Fibrilation

Answer 34

Irritable sites within the atria firing at a rate of 400-600 bpm causing the muscle to quiver.