EKG TEST PREP

Question 1

What is the term for the force the heart must work against to pump blood?

Answer 1

Afterload

Question 2

What are the top chambers of the heart separated by the interatrial septum called?

Answer 2

Atria

Question 3

What are the valves of the heart?

Answer 3

Flaps of fibrous tissue firmly anchored to the Anuli fibrosi Cordis, which prevent backflow.

Question 4

What is the part of the heart that points downward toward the left hip?

Answer 4

Apex of the heart

Question 5

What is located between the atria and ventricles?

Answer 5

Atrioventricular valve (AKA: AV valve)

Question 6

What is the valve between the right atrium and right ventricle?

Answer 6

Tricuspid valve

Question 7

What is the valve between the left atrium and left ventricle?

Answer 7

Bicuspid/Mitral valve

Question 8

What are the tendons that hold the AV valve in place to prevent it from swinging upward into the atria?

Answer 8

Chordae Tendineae

Question 9

What is the amount of blood the heart pumps in one minute called, and what is its normal range?

Answer 9

Cardiac Output, 4-8 L

Question 10

What drug effect on the heart changes the heart rate?

Answer 10

Chronotropic effect

Question 11

What do you call the broad, flat part of the heart that points toward the right shoulder?

Answer 11

Base of the heart

Question 12

A drug with chronotropic effects can be _______ or _______?

Answer 12

Positive or negative

Question 13

What does EKG stand for?

Answer 13

Electrocardiogram

Question 14

True or False: An EKG measures the electrical activity of the heart.

Answer 14

True

Question 15

Fill in the blank: The standard EKG consists of _____ leads.

Answer 15

12

Question 16

What is the purpose of the P wave in an EKG?

Answer 16

It represents atrial depolarization.

Question 17

Which part of the EKG waveform corresponds to ventricular depolarization?

Answer 17

QRS complex

Question 18

True or False: The T wave represents ventricular repolarization.

Answer 18

True

Question 19

What is the normal heart rate range indicated by an EKG?

Answer 19

60 to 100 beats per minute

Question 20

Multiple choice: Which lead is typically used as the reference lead in a standard EKG?

Answer 20

Lead II

Question 21

What does the ST segment indicate in an EKG?

Answer 21

It indicates the period between ventricular depolarization and repolarization.

Question 22

True or False: An EKG can diagnose heart conditions.

Answer 22

True

Question 23

Fill in the blank: The interval that measures the time between the start of the P wave and the start of the QRS complex is called the _____ interval.

Answer 23

PR

Question 24

What is the significance of a prolonged QT interval?

Answer 24

It can increase the risk of arrhythmias.

Question 25

Multiple choice: What does a flat T wave potentially indicate?

Answer 25

Myocardial ischemia

Question 26

What is the role of electrodes in an EKG?

Answer 26

They detect the electrical signals from the heart.

Question 27

True or False: EKGs can only be performed in a hospital setting.

Answer 27

False

Question 28

Fill in the blank: The _____ wave reflects atrial contraction.

Answer 28

P

Question 29

What can cause artifacts in an EKG reading?

Answer 29

Patient movement, poor electrode placement, and electrical interference.

Question 30

Multiple choice: Which of the following conditions can be diagnosed with an EKG?

Answer 30

Arrhythmias

Question 31

What does the U wave represent in an EKG?

Answer 31

It is thought to represent repolarization of the Purkinje fibers.

Question 32

True or False: EKGs can be used to monitor heart function over time.

Answer 32

True

Question 33

Fill in the blank: The _____ interval measures the time it takes for the ventricles to depolarize and repolarize.

Answer 33

QT

Question 34

What is the significance of the heart's electrical axis in EKG interpretation?

Answer 34

It helps determine the direction of the heart's electrical activity.

Question 35

What might an elevated ST segment indicate?

Answer 35

Myocardial infarction

Question 36

Multiple choice: Which EKG finding is characteristic of atrial fibrillation?

Answer 36

Irregularly irregular rhythm

Question 37

True or False: A resting EKG can show signs of a previous heart attack.

Answer 37

True

Question 38

What is the main advantage of a 12-lead EKG over a single-lead EKG?

Answer 38

It provides a comprehensive view of the heart's electrical activity from multiple angles.