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NHA MODULES > MODULE 9 > Flashcards

MODULE 9 Flashcards

(58 cards)

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1
Q

What does EKG stand for?

A

Electrocardiogram

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2
Q

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

A

True

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3
Q

Fill in the blank: The _____ is the part of the heart that receives deoxygenated blood.

A

right atrium

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4
Q

What is the normal heart rate range for adults?

A

60 to 100 beats per minute

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5
Q

What does the P wave represent in an EKG?

A

Atrial depolarization

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6
Q

True or False: The QRS complex represents ventricular repolarization.

A

False

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7
Q

What is the primary purpose of a stress test?

A

To assess how the heart performs under physical stress

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8
Q

Multiple choice: Which of the following is a common indication for an EKG? A) Chest pain B) Headache C) Fever

A

A) Chest pain

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9
Q

Fill in the blank: The _____ node is known as the heart’s natural pacemaker.

A

sinoatrial (SA)

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10
Q

What does the T wave represent in an EKG?

A

Ventricular repolarization

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11
Q

True or False: A standard EKG has 12 leads.

A

True

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12
Q

What is the purpose of a Holter monitor?

A

To continuously record heart activity over 24 to 48 hours

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13
Q

Fill in the blank: The _____ interval measures the time from the beginning of atrial depolarization to the beginning of ventricular depolarization.

A

PR

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14
Q

What does an elevated ST segment indicate?

A

Possible myocardial infarction

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15
Q

Multiple choice: Which of the following conditions can an EKG help diagnose? A) Diabetes B) Hypertension C) Arrhythmias

A

C) Arrhythmias

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16
Q

True or False: The QT interval varies with heart rate.

A

True

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17
Q

What is the role of the AV node in the heart?

A

To delay the electrical signal before it enters the ventricles

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18
Q

Fill in the blank: The _____ is the outer layer of the heart.

A

epicardium

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19
Q

What is the significance of the U wave in an EKG?

A

It may represent ventricular repolarization, but its significance is often unclear.

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20
Q

Multiple choice: Which lead is typically used to monitor the heart’s rhythm continuously? A) Lead I B) Lead II C) Lead III

A

B) Lead II

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21
Q

True or False: EKGs can be performed without any special preparation.

A

False

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22
Q

What does the term ‘arrhythmia’ refer to?

A

An irregular heartbeat

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23
Q

Fill in the blank: The _____ is the muscular layer of the heart.

A

myocardium

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24
Q

What is the purpose of an echocardiogram?

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A

To visualize the heart’s structure and function using ultrasound

25
Multiple choice: What is the ideal patient position for an EKG? A) Supine B) Sitting C) Standing
A) Supine
26
True or False: Atrial fibrillation can be detected on an EKG.
True
27
What does the term 'ischemia' mean?
Insufficient blood flow to the heart muscle
28
Fill in the blank: The _____ is the part of the heart that pumps oxygenated blood to the body.
left ventricle
29
What is the role of the coronary arteries?
To supply blood to the heart muscle
30
Multiple choice: Which of the following can cause artifacts on an EKG? A) Patient movement B) Proper electrode placement C) Calm breathing
A) Patient movement
31
True or False: The left atrium receives blood from the lungs.
True
32
What is the purpose of a cardiovascular stress test?
To evaluate the heart's response to physical exertion
33
Fill in the blank: The _____ is the valve between the left atrium and left ventricle.
mitral valve
34
What does a prolonged QT interval indicate?
Increased risk of arrhythmias
35
Multiple choice: Which of the following waves indicates atrial depolarization? A) Q wave B) R wave C) P wave
C) P wave
36
True or False: The heart's electrical activity can be measured from the skin.
True
37
What is the significance of the R-R interval?
It is used to determine heart rate and rhythm.
38
Fill in the blank: The _____ is responsible for pumping deoxygenated blood to the lungs.
right ventricle
39
What does a flat T wave potentially indicate?
Electrolyte imbalance or ischemia
40
Multiple choice: Which condition is characterized by a rapid heart rate? A) Bradycardia B) Tachycardia C) Arrhythmia
B) Tachycardia
41
True or False: EKGs can be used to monitor the effectiveness of certain medications.
True
42
What is the function of the interventricular septum?
To separate the left and right ventricles
43
Fill in the blank: The _____ is the structure that carries electrical impulses throughout the ventricles.
Purkinje fibers
44
What does a downward deflection in the EKG indicate?
Repolarization or a negative electrical charge
45
Multiple choice: What is the standard speed of an EKG paper? A) 10 mm/sec B) 25 mm/sec C) 50 mm/sec
B) 25 mm/sec
46
True or False: A 12-lead EKG provides a comprehensive view of the heart's electrical activity.
True
47
What is the purpose of using electrodes during an EKG?
To detect electrical signals from the heart
48
Fill in the blank: The _____ phase of the cardiac cycle is when the heart muscle contracts.
systole
49
What does the term 'cardiac output' refer to?
The amount of blood the heart pumps in one minute
50
Multiple choice: Which of the following is NOT a risk factor for cardiovascular disease? A) Smoking B) Regular exercise C) High cholesterol
B) Regular exercise
51
True or False: The heart is primarily composed of cardiac muscle tissue.
True
52
What is the role of the vagus nerve in heart function?
To slow down the heart rate
53
Fill in the blank: The _____ is the largest artery in the body.
aorta
54
What does the term 'hypertension' mean?
High blood pressure
55
Multiple choice: What can an EKG help identify? A) Heart rate abnormalities B) Lung capacity C) Blood sugar levels
A) Heart rate abnormalities
56
True or False: The right ventricle pumps blood to the systemic circulation.
False
57
What is an important consideration when interpreting an EKG?
Patient history and clinical context
58
Fill in the blank: The _____ is responsible for the heart's electrical conduction system.
sinoatrial node

NHA MODULES (14 decks)

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