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Intro, Pathophysiology

Total questions: 42

Worksheet time: 25mins

Name
Class
Date
1.

The conduction system is made up of pacemaker cells and contractile cells

a)

true

b)

false

2.

Which of the following are pacemaker cells?

a)

sinoatrial (SA) node

b)

atrioventricular (AV) node

c)

cardiac myocytes

3.

Which of the following are contractile cells?

a)

sinoatrial (SA) node

b)

atrioventricular (AV) node

c)

cardiac myocytes

4.

Communicate through gap junctions

a)

pacemaker cells

b)

contractile cells

5.

Which of the following are true about signal transmission?

a)

Atria and ventricles contract independently

b)

signal only enters ventricles through AV node

c)

signal only enters ventricles through SA node

6.

Serves as a pacemaker

a)

SA node

b)

AV node

7.

Signal is delayed at

a)

SA node

b)

AV node

8.

After the SA node spreads its signal, _____ contracts

a)

atria

b)

ventricle

9.

After the AV node spreads its signal, conduction then spreads rapidly and uniformly and _______ contracts

a)

atria

b)

ventricles

10.

Which of the following electrolyte channels polarizes?

a)

potassium (K+)

b)

sodium (Na+)

c)

calcium (Ca2+)

11.

Which of the following electrolyte channels depolarizes?

a)

potassium (K+)

b)

sodium (Na+)

c)

calcium (Ca2+)

12.

The SA node is the most important for normal heart rate control

a)

true

b)

false

13.

Sympathetic effects are influenced primarily by slope of phase 4 depolarization, max negative diastolic potential and threshold potential

a)

true

b)

false

14.

Sympathetic activation decreases heart rate

a)

true

b)

false

15.

Which of the following are true about sympathetic activation?

a)

lower threshold potential

b)

shorter duration action potential

c)

more rapid depolarization

d)

steeper phase 4 slope

16.

Normal sinus rhythm

a)
b)
c)
d)
17.

2nd degree heart block

a)
b)
c)
d)
18.

Junctional rhythm

a)
b)
c)
d)
19.

Fibrillation

a)
b)
c)
d)
20.

Which of the following are true about abnormal rhythm?

a)

aka dysrhythmias or irregular heartbeat

b)

abnormalities in impulse formation and/or conduction

c)

may originate anywhere in the heart

d)

only originate in one place of the heart

21.

What are the range of symptoms of Arrhythmias?

a)

may be asymptomatic

b)

bothersome (palpitations)

c)

lethal

d)

are never asymptomatic

22.

Which of the following may cause Arrhythmias?

a)

anatomical defects

b)

electrolyte imbalances

c)

ischemia

d)

stress

23.

Which of the following are symptoms of arrhythmias?

a)

palpitations

b)

fatigue

c)

syncope

d)

angina

e)

dizziness and dyspnea

24.

Classification terminology based on site of origin

a)

supraventricular (atrial) or ventricular

b)

increased or decreased

c)

changes in intervals (narrow/broad)

d)

new/absent deflections

e)

regular or irregular

25.

Classification terminology of complexes on EKG

a)

supraventricular (atrial) or ventricular

b)

increased or decreased

c)

changes in intervals (narrow/broad)

d)

new/absent deflections

e)

regular or irregular

26.

Classification terminology of heart rhythm

a)

supraventricular (atrial) or ventricular

b)

presence or normal waves/interval lengths

c)

changes in intervals (narrow/broad)

d)

new/absent deflections

e)

regular or irregular

27.

Which type of arrhythmia has an increased firing rate >100bpm?

a)

tachyarrhythmias

b)

bradyarrhythmias

28.

Which type of arrhythmia has an decreased firing rate <60bpm?

a)

tachyarrhythmias

b)

bradyarrhythmias

29.

Which of the following originate in the atrium?

a)

atrial flutter

b)

atrial fibrillation

c)

AV nodal reentry

d)

acute ventricular tachycardia

e)

ventricular fibrillation

30.

Which of the following are true about prolonged QT interval?

a)

QTc >510mS correlation with onset of Torsades de Pointes (TdP) and cardiac arrest

b)

congenital

c)

acquired

d)

QTc <510mS correlation with onset of Torsades de Pointes (TdP) and cardiac arrest

31.

Prolonged QT interval can be acquired due to physiologic conditions or drug induced

a)

true

b)

false

32.

Which are the most common drugs that prolong QT?

a)

antipsychotics

b)

antidepressants

c)

antibacterials

d)

antiarrhythics

33.

Which of the following can be used to treat arrhythmias?

a)

Implantable cardioverter defibrillators (ICD)

b)

Catheter ablation

c)

Drugs

d)

open heart surgery

34.

Implanted in patients at high risk for death

a)

Implantable cardioverter defibrillators (ICD)

b)

Catheter ablation

c)

drugs

35.

Continuously monitors for v-fib and v-tach

a)

Implantable cardioverter defibrillators (ICD)

b)

Catheter ablation

c)

drugs

36.

Used for certain recurrent arrhythmias

a)

Implantable cardioverter defibrillators (ICD)

b)

Catheter ablation

c)

drugs

37.

Catheter heats and destroys abnormal tissue

a)

Implantable cardioverter defibrillators (ICD)

b)

Catheter ablation

c)

drugs

38.

Antiarrhythmics can cause arrhythmias

a)

true

b)

false

39.

Sodium moves in

a)

A (Phase 0)

b)

B (Phase 1)

c)

C (Phase 2)

d)

D (Phase 3

e)

E (Phase E)

40.

K+, Cl- move out

a)

A (Phase 0)

b)

B (Phase 1)

c)

C (Phase 2)

d)

D (Phase 3

e)

E (Phase E)

41.

Ca2+ moves in, K+ move out

a)

A (Phase 0)

b)

B (Phase 1)

c)

C (Phase 2)

d)

D (Phase 3

e)

E (Phase E)

42.

K+ moves out

a)

A (Phase 0)

b)

B (Phase 1)

c)

C (Phase 2)

d)

D (Phase 3

e)

E (Phase E)

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