EKG TEST 1
問題一覧
1
The rate of sinus tachycardia is
100BPM
2
An ECG rhythm strip shows a ventricular rate of 46 beats/min, a regular rhythm, a PR interval of 0.14 second, a QRS duration of 0.06 second, and one upright P wave before each QRS. This rhythm is
sinus bradycardia
3
An ECG rhythm strip shows a ventricular rate of 128 beats/min, a regular rhythm, a PR interval of 0.16 second, a QRS duration of 0.08 second, and one upright P wave before each QRS. This rhythm is sinus
sinus tachycardia
4
Rate of sinus rhythm is
60-100BPM
5
Rate of sinus bradycardia is
slower than 60BPM
6
How PACs are usually managed?
correcting the underline cause
7
Upon conversion of atrial fibrillation to sinus rhythm, the patient should be observed for signs of a possible stroke
True
8
A beat originating from the AV junction that appears later than the next expected sinus beat is called a
junctional escape beat
9
Common causes of junctional dyshythmias may include acute coronary syndromes and
digitalis toxicity
10
Wich of the following medications increases heart rate by accelerating the
SA node discharge rate and blocking the vagus nerve?
atropine
11
What is the function of the right atrium?
pump blood to the right ventricle
12
Which is a branch of the left coronary artery
circumflex
13
A conduction problem above the level of the bundle branches will largely affect the P wave and PR interval.
true
14
The apex of the heart is formed by the
tip of the left ventricle
15
The left atrium receives blood from the
pulmonary veins
16
Blood pressure is determined by——— and multipled by————
cardiac output vascular resistance
17
The right atrium receives venous blood from the head, neck, and thorax via the ——-remainder of the body via the ——, and from the heart via the ——
superior vena cava inferior vena cava coronary sinus
18
The intrinsic rate of the atrioventricular (AV) bundle is beats/min _
60-100BPM
19
——- is the ability of cardiac pacemaker cells to spontaneously initiate an electrical impulse without being stimulated from another source, such as a nerve.
automaticity
20
The normal pacemaker of the heart is the—- node, which is found in the ——-atrium, and has an intrinsic firing rate of ———beats/min.
Sa node right 60-100BPM
21
On an ECG, what is the first negative deflection seen after the P wave?
Q wave
22
If the wave of depolarization (electrical impulse) moves toward the positive electrode, the waveform recorded on ECG graph paper will be upright (positive deflection).
True
23
On the ECG, the T wave represents
ventricular repolarization
24
The thick, muscular middle layer of the heart wall that contains the atrial and ventricular muscle fibers necessary for contraction is the
myocardium
25
Blood flows from the right atrium through the——- valve into the right ventricle.
tricuspid
26
Which of the following are semilunar valves?
aortic and pulmonary valve
27
Multifocal atrial tachycardia is another name for atrial fibrillation.
false
28
A junctional escape rhythm occurs because of _
slowling rate of the heart
29
The usual rate of nonparoxysmal junctional tachycardia is ——beats/min
120-140BPM
30
The atrioventricular (AV) junction consists of the
Av node and nonbranchin bundle of his
31
If seen, the P wave of a rhythm
originating in the AV junction will appear. ___ in lead Il.
inverted
32
Which of the following may cause a sinus bradycardia?
hypothermia
33
Which of the following correctly describes multifocal atrial tachycardia?
atrial and ventricular rhythms are irregular
34
The most common type of
supraventricular tachycardia (SVT) is
atrioventrical nodal
35
Which of the following are possible causes of sinus tachycardia?
fever pain anxiety
36
Leads I, aVL, V5, and V6 view the _ surface of the left ventricle.
lateral
37
The absolute refractory period begins with the onset of the —— and terminates ——-
QRS complex apex of T wave
38
The QT interval is measured from the beginning of the——
QRS complex
39
In an adult, the normal duration of the QRS complex is——
0.10sec or less
40
The intrinsic rate of the Purkinje fibers is _ beats/min.
20-40BPM
41
The intrinsic rate of the SA node is —- beats/min.
60-100BPM
42
On the ECG, the time necessary for the spread of an electrical impulse through the AV node, bundle of His, right and left bundle branches, and the Purkinje fibers is reflected by the ——-
PR segment
問題一覧
1
The rate of sinus tachycardia is
100BPM
2
An ECG rhythm strip shows a ventricular rate of 46 beats/min, a regular rhythm, a PR interval of 0.14 second, a QRS duration of 0.06 second, and one upright P wave before each QRS. This rhythm is
sinus bradycardia
3
An ECG rhythm strip shows a ventricular rate of 128 beats/min, a regular rhythm, a PR interval of 0.16 second, a QRS duration of 0.08 second, and one upright P wave before each QRS. This rhythm is sinus
sinus tachycardia
4
Rate of sinus rhythm is
60-100BPM
5
Rate of sinus bradycardia is
slower than 60BPM
6
How PACs are usually managed?
correcting the underline cause
7
Upon conversion of atrial fibrillation to sinus rhythm, the patient should be observed for signs of a possible stroke
True
8
A beat originating from the AV junction that appears later than the next expected sinus beat is called a
junctional escape beat
9
Common causes of junctional dyshythmias may include acute coronary syndromes and
digitalis toxicity
10
Wich of the following medications increases heart rate by accelerating the
SA node discharge rate and blocking the vagus nerve?
atropine
11
What is the function of the right atrium?
pump blood to the right ventricle
12
Which is a branch of the left coronary artery
circumflex
13
A conduction problem above the level of the bundle branches will largely affect the P wave and PR interval.
true
14
The apex of the heart is formed by the
tip of the left ventricle
15
The left atrium receives blood from the
pulmonary veins
16
Blood pressure is determined by——— and multipled by————
cardiac output vascular resistance
17
The right atrium receives venous blood from the head, neck, and thorax via the ——-remainder of the body via the ——, and from the heart via the ——
superior vena cava inferior vena cava coronary sinus
18
The intrinsic rate of the atrioventricular (AV) bundle is beats/min _
60-100BPM
19
——- is the ability of cardiac pacemaker cells to spontaneously initiate an electrical impulse without being stimulated from another source, such as a nerve.
automaticity
20
The normal pacemaker of the heart is the—- node, which is found in the ——-atrium, and has an intrinsic firing rate of ———beats/min.
Sa node right 60-100BPM
21
On an ECG, what is the first negative deflection seen after the P wave?
Q wave
22
If the wave of depolarization (electrical impulse) moves toward the positive electrode, the waveform recorded on ECG graph paper will be upright (positive deflection).
True
23
On the ECG, the T wave represents
ventricular repolarization
24
The thick, muscular middle layer of the heart wall that contains the atrial and ventricular muscle fibers necessary for contraction is the
myocardium
25
Blood flows from the right atrium through the——- valve into the right ventricle.
tricuspid
26
Which of the following are semilunar valves?
aortic and pulmonary valve
27
Multifocal atrial tachycardia is another name for atrial fibrillation.
false
28
A junctional escape rhythm occurs because of _
slowling rate of the heart
29
The usual rate of nonparoxysmal junctional tachycardia is ——beats/min
120-140BPM
30
The atrioventricular (AV) junction consists of the
Av node and nonbranchin bundle of his
31
If seen, the P wave of a rhythm
originating in the AV junction will appear. ___ in lead Il.
inverted
32
Which of the following may cause a sinus bradycardia?
hypothermia
33
Which of the following correctly describes multifocal atrial tachycardia?
atrial and ventricular rhythms are irregular
34
The most common type of
supraventricular tachycardia (SVT) is
atrioventrical nodal
35
Which of the following are possible causes of sinus tachycardia?
fever pain anxiety
36
Leads I, aVL, V5, and V6 view the _ surface of the left ventricle.
lateral
37
The absolute refractory period begins with the onset of the —— and terminates ——-
QRS complex apex of T wave
38
The QT interval is measured from the beginning of the——
QRS complex
39
In an adult, the normal duration of the QRS complex is——
0.10sec or less
40
The intrinsic rate of the Purkinje fibers is _ beats/min.
20-40BPM
41
The intrinsic rate of the SA node is —- beats/min.
60-100BPM
42
On the ECG, the time necessary for the spread of an electrical impulse through the AV node, bundle of His, right and left bundle branches, and the Purkinje fibers is reflected by the ——-
PR segment