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Flashcards in Cardiology Test 1 Deck (69):
0

The heart sound produced by the closing of the aortic and pulmonary valves:

S2

1

Myocardial ischemia may result in:

ST Segment Depression

2

An ECG machine is useful for:

Evaluating the heart's electrical conduction system for abnormalities

3

The amount of resistance that must be overcome by the left ventricle during systole is called:

Afterload

4

Which of the following will occur with an increase in peripheral vascular resistance:

increased preload
decreased stroke volume

Decreased stroke volume

5

When stimulated the ______ branch of the nervous system will increase heart rate, av conduction and irritability.

sympathetic

6

The distance between two "tic" marks is ____ seconds

3

7

Poiseuille's law specifically states that blood flow through a vessel is directly proportional to the ________ of the vessel's radius.

4th power

8

A normal sinus rhythm should have a QRS complex lasting less than _____ seconds

0.12

9

The anterior surface of the heart is best viewed by ECG leads:

V1 - V4

10

When the ECG paper is traveling at a standard rate of 25/mm per second a large box in the horizontal direction equals:

0.20 seconds

11

The proportion of the left ventricular volume that is pumped out of the heart during systole is the:

Ejection fraction

12

While monitoring a patient's cardiac rhythm, you note that there is no electrical activity after a PQRST complex for a period equal to exactly three of the previous R-R intervals. This is most accurately described as:

Sinus Block

13

The first phase of the cardiac cycle is:

diastole

14

The built-in rate of each of the three major areas of the conduction system is referred to as the ________ rate.

Inherent

15

Blood entering the left atrium arrives via the:

Pulmonary vein

16

A major EKG finding that can help you distinguish between supraventricular and ventricular rhythms is the width of the:

QRS Complex

17

The valve between the right atrium and right ventricle is the ________ valve.

Tricuspid

18

The presence of inverted T waves on an ECG indicates:

Myocardial ischemia

19

Parasympathetic innervation of the heart occurs via the:

Vagus Nerve

20

Release of acetylcholine at the neuroeffector junction would result in a(n):

Negative chronotropic effect

21

The total duration of ventricular depolarization is represented by the ________ on the ECG.

QT Interval

22

The pressure in the left ventricle at the end of diastole is called:

Preload

23

What occurs during depolarization of a cell?

Cell becomes relatively more positively charged

24

the most common cause of death resulting from myocardial infarction is:

Dysthymia

25

A strong impulse can cause a premature abnormal discharge during the ________ refractory period.

relative

26

ECG findings associated with hypokalemia include:

U waves and T waves

27

What term is used to refer to the process of electrical discharge and the flow of electrical activity?

depolarization

28

Excessive preload over time would lead to:

Weakening of the left ventricle

29

The inherent rate of the SA node is:

60 - 100

30

The cardiac activity that takes place above the ventricles is referred to as ________ activity.

Supraventricular

31

Beta-blockers generally have what kind of an effect?

Decreased myocardial contractility

32

Public education about coronary heart disease focuses on:

Risk factors and signs and symptoms of CHD

33

No impulse can cause depolarization during the ________ refractory period.

absolute

34

What endocrine substance acts as a marker for congestive heart failure?

BNP(Brain Natriuretic Peptide)

35

On EKG graph paper, the distance in time between two light vertical lines, or across one small square, is ________ seconds.

0.04

36

The inherent rate of the AV junction is ________ beats per minute.

40 - 60

37

If polarizing is considered the ready state, then ________ would be considered the recovery state.

repolarization

38

The difference between apical and peripheral pulse rates that results from decreased cardiac output when the atria fail to contract is known as:

Pulse deficit

39

When an EKG machine is turned on but not yet connected to the patient, the stylus will produce a straight line called the ________ line.

isoelectric

40

The vertical lines on the EKG measure:

Time

41

_______ is a drop in blood pressure greater than 10 mmhg with inspiration

Pulsus Paradoxus

42

When a P wave originates in the SA node, it is smooth rounded and:

Upright

43

What would eliminate a patient from consideration for fibrinolytic therapy?

Hemorrhagic stroke six months ago

44

What rhythm would require transcutaneous pacing?

symptomatic third-degree AV block

45

A junctional escape beats occurs when:

The rate of the SA node is slower than the AV node

46

The short period of f electrical inactivity that occurs after a P wave is called:

PR segment

47

The deflections that occur above and below the isoelectric lines are referred to as:

waves

48

The first part of the aorta that leaves the heart is the:

Ascending aorta

49

Describe one Valsalva maneuver :

Ask the patient to bear down as if trying to move bowels with their mouth and nose closed

50

An increase in afterload results in a(n) ________ workload of the heart, especially in the ________ ventricle.

Increased; left

51

The PR interval reflects all _____ activity

Atrial

52

To detect life-threatening cardiac dysrhythmias, the paramedic must view the ECG in ________ lead(s).

One lead

53

A normal sinus rhythm originates in the:

SA Node

54

After leaving the area of the AV node, impulses go through the ________ to reach the right and left bundle branches.

Bundle of HIS

55

You have administered a drug with potent beta-1 effects. Which of the following effects should you most anticipate?

increased heart rate

56

Your patient in atrial fibrillation has a heart rate of 108 on the monitor, but her radial pulse is 88. The patient is experiencing:

Pulse deficit

57

The horizontal lines on the EKG graph paper measure:

voltage

58

Which of the following most accurately describes the etiology of Wolff-Parkinson-White syndrome?

Presence of an accessory conduction pathway

59

Auscultation of an S3 is associated with:

Congestive Heart Failure

60

The EKG machine will produce an upright deflection on the graph paper if the flow of electricity is toward the ________ electrode.

Positive

61

The inherent rate of the ventricle is _______ beats per minute

20 - 40

62

The base of the heart lies at the level of the _____ rib

Second

63

A series of cardiac cycles makes up a:

EKG Rhythm Strip

64

The QRS complex wave is indicative of ventricular ________ and thus should correspond to the patient's pulse.

Depolarization

65

For a resting potential in a cardiac cell to exist, there must be

Adequate number of potassium ions inside the cell and sodium ions outside the cell

66

The PR interval begins at the first sign of the P wave and ends at the first sign of the next deflection, which is called the:

QRS Complex

67

Typical stroke volume is about ________ of the volume of the left ventricle.


Two-thirds

68

In cardiac cells the electrical charges are provided primarily by what two electrolytes

Sodium and Potassium