NUR 304 Exam 2 PQ Cardiac
Study online at https://quizlet.com/_ekcle5
1. What area of the heart's electrical conduction is a
known as the "pacemaker" of the heart?
A. SA node
B. AV node
C. Purknije Fibers
D. Bundle of His
2. What area of the heart is responsible for the delay of a
conduction between the artria and ventricles?
A. AV node
B. Bundle of His
C. Bachmann's Bundle
D. Right bundle branch
3. True or False: Depolarization of the heart muscle is true
when the muscle contracts and repolarization is when
the heart muscle rests.
4. On an EKG the P-wave represents what area of the d
heart?
A. Left bundle branch
B. AV node
C. Bachmann's Bundle
D. SA node
5. What part of the heart's electrical system is known as a
the "gatekeeper"?
A. AV node
B. Gap Junction
C. Tetany
D. SA node
6. b
, NUR 304 Exam 2 PQ Cardiac
Study online at https://quizlet.com/_ekcle5
What area of the heart forms the PR segment on the
EKG?
A. Purkinje fibers
B. AV node and Right and Left Bundles
C. Apex of heart
D. Bundle of His
7. What area of the heart forms the QRS part on an EKG? a
A. Purkinje fibers
B. Left and right bundles
C. AV node
D. SA node
8. A patient has a serum potassium level of 3.5 mEq/L, c
and is placed on a cardiac monitor, and receives 40
mEq potassium chloride in 1000 ml of 5% dextrose
in water IV. Which of the following ECG patterns indi-
cates that the infusions should be discontinued?
a. Narrowed QRS complex
b. Shortened PR interval
c. Tall peaked T waves
d. Prominent U waves
9. A patient presents to the emergency department with a
sudden onset chest pain radiating to the left arm and
diaphoresis. Which of the following is the most appro-
priate initial step in management?
a. Obtain an ECG
b. Administer nitroglycerin
c. Administer oxygen
d. Order a chest Xray
10. True or False: The SA node is located in the Left atrium. false
, NUR 304 Exam 2 PQ Cardiac
Study online at https://quizlet.com/_ekcle5
11. What is the correct sequence of electrical conduction a
of the heart?
A. SA node, internodal pathways, AV node, Bundle of
His, Right and Left Bundle Branch, Purkinje fibers
B. AV node, internodal pathways, SA node, Bundle of
His, Right and Left Bundle Branch, Purkinje fibers
C. SA node, internodal pathways, AV node, Purkinje
Fibers, Right and Left Bundle Branch, Bundle of His
D. None of the options are correct
12. The myocardium receives its blood supply from what c
structure within the body?
A. pulmonary arteries
B. superior vena cava
C. coronary arteries
D. pulmonary veins
13. What vessel supplies parts of the electrical conduction b
system, SA and AV node, in the heart with blood?
A. left anterior descending artery
B. right coronary artery
C. left pulmonary artery
D. left coronary artery
14. Which statement below best describes the term car- b
diac preload?
A. The pressure the ventricles stretch at the end of
systole.
B. The amount the ventricles stretch at the end of
diastole
C. The pressure the ventricles must work against to
pump blood out of the heart.
, NUR 304 Exam 2 PQ Cardiac
Study online at https://quizlet.com/_ekcle5
D. The strength of the myocardial cells to shorten with
each beat.
15. Select the statement below that best describes cardiac d
afterload:
A. It's the volume amount that fills the ventricles at the
end of diastole.
B. It's the volume the ventricles must work against to
pump blood out of the body.
C. It's the amount of blood the left ventricle pumps per
beat.
D. It's the pressure the ventricles must work against
to open the semilunar valves so blood can be pumped
out of the heart.
16. What two factors are used to calculate cardiac output? a,c
Select all that apply:
A. Heart rate
B. Blood pressure
C. Stroke volume
D. Mean arterial pressure
17. ___________ is the amount of blood pumped by the left d
ventricle with each beat.
A. Cardiac output
B. Preload
C. Afterload
D. Stroke volume
18. Stroke volume plays an important part in cardiac out- b,c,d
put. Select all the factors below that influence stroke
volume:
A. Heart rate
Study online at https://quizlet.com/_ekcle5
1. What area of the heart's electrical conduction is a
known as the "pacemaker" of the heart?
A. SA node
B. AV node
C. Purknije Fibers
D. Bundle of His
2. What area of the heart is responsible for the delay of a
conduction between the artria and ventricles?
A. AV node
B. Bundle of His
C. Bachmann's Bundle
D. Right bundle branch
3. True or False: Depolarization of the heart muscle is true
when the muscle contracts and repolarization is when
the heart muscle rests.
4. On an EKG the P-wave represents what area of the d
heart?
A. Left bundle branch
B. AV node
C. Bachmann's Bundle
D. SA node
5. What part of the heart's electrical system is known as a
the "gatekeeper"?
A. AV node
B. Gap Junction
C. Tetany
D. SA node
6. b
, NUR 304 Exam 2 PQ Cardiac
Study online at https://quizlet.com/_ekcle5
What area of the heart forms the PR segment on the
EKG?
A. Purkinje fibers
B. AV node and Right and Left Bundles
C. Apex of heart
D. Bundle of His
7. What area of the heart forms the QRS part on an EKG? a
A. Purkinje fibers
B. Left and right bundles
C. AV node
D. SA node
8. A patient has a serum potassium level of 3.5 mEq/L, c
and is placed on a cardiac monitor, and receives 40
mEq potassium chloride in 1000 ml of 5% dextrose
in water IV. Which of the following ECG patterns indi-
cates that the infusions should be discontinued?
a. Narrowed QRS complex
b. Shortened PR interval
c. Tall peaked T waves
d. Prominent U waves
9. A patient presents to the emergency department with a
sudden onset chest pain radiating to the left arm and
diaphoresis. Which of the following is the most appro-
priate initial step in management?
a. Obtain an ECG
b. Administer nitroglycerin
c. Administer oxygen
d. Order a chest Xray
10. True or False: The SA node is located in the Left atrium. false
, NUR 304 Exam 2 PQ Cardiac
Study online at https://quizlet.com/_ekcle5
11. What is the correct sequence of electrical conduction a
of the heart?
A. SA node, internodal pathways, AV node, Bundle of
His, Right and Left Bundle Branch, Purkinje fibers
B. AV node, internodal pathways, SA node, Bundle of
His, Right and Left Bundle Branch, Purkinje fibers
C. SA node, internodal pathways, AV node, Purkinje
Fibers, Right and Left Bundle Branch, Bundle of His
D. None of the options are correct
12. The myocardium receives its blood supply from what c
structure within the body?
A. pulmonary arteries
B. superior vena cava
C. coronary arteries
D. pulmonary veins
13. What vessel supplies parts of the electrical conduction b
system, SA and AV node, in the heart with blood?
A. left anterior descending artery
B. right coronary artery
C. left pulmonary artery
D. left coronary artery
14. Which statement below best describes the term car- b
diac preload?
A. The pressure the ventricles stretch at the end of
systole.
B. The amount the ventricles stretch at the end of
diastole
C. The pressure the ventricles must work against to
pump blood out of the heart.
, NUR 304 Exam 2 PQ Cardiac
Study online at https://quizlet.com/_ekcle5
D. The strength of the myocardial cells to shorten with
each beat.
15. Select the statement below that best describes cardiac d
afterload:
A. It's the volume amount that fills the ventricles at the
end of diastole.
B. It's the volume the ventricles must work against to
pump blood out of the body.
C. It's the amount of blood the left ventricle pumps per
beat.
D. It's the pressure the ventricles must work against
to open the semilunar valves so blood can be pumped
out of the heart.
16. What two factors are used to calculate cardiac output? a,c
Select all that apply:
A. Heart rate
B. Blood pressure
C. Stroke volume
D. Mean arterial pressure
17. ___________ is the amount of blood pumped by the left d
ventricle with each beat.
A. Cardiac output
B. Preload
C. Afterload
D. Stroke volume
18. Stroke volume plays an important part in cardiac out- b,c,d
put. Select all the factors below that influence stroke
volume:
A. Heart rate
