Exam 1: Dysrhythmias (NCLEX) Study Guide Exam /
50 Actual Questions with Answers & Rationales (A+
Guide Solution) Newest 2025/2026
Terms in this set (49)
A client's electrocardiogram A
strip shows atrial and
ventricular rates of 80
complexes per minute. The
PR interval is 0.14 second,
and the QRS complex
measures 0.08 second.
The nurse interprets this
rhythm is:
A) Normal sinus rhythm
B) Sinus bradycardia
C) Sinus tachycardia
D) Sinus dysrhythmia
,A client has frequent bursts D
of ventricular tachycardia on Ventricular tachycardia is a life-threatening dysrhythmia
the cardiac monitor. A nurse that results from an irritable ectopic focus that takes over as
is most concerned with this the pacemaker for the heart. The low cardiac output that
dysrhythmia because: results can lead quickly to cerebral and myocardial
ischemia. Client's frequently experience a feeling of
A) It is uncomfortable for the impending death. Ventricular tachycardia is treated with
client, giving a sense of antidysrhythmic medications or magnesium sulfate,
impending doom. B) It cardioversion
produces a high cardiac (client awake), or defibrillation (loss of consciousness),
output that quickly leads to Ventricular tachycardia can deteriorate into ventricular
defibrillation at any time.
cerebral and myocardial
ischemia.
C) It is almost
impossibleto convert to a
normal sinus rhythm.
D) It can develop
intoventricular fibrillation
at any time.
The nurse administers BCD
amiodarone (Cordarone) Amiodarone causes prolongation of the QT interval, which
can precipitate dysrhythmia. Antidysrhythmic medications
to a client with ventricular
cause changes in cardiac rhythm and rate; therefore
tachycardia. Which monitoring of heart rate and rhythm is needed.Electrolyte
monitoring by the nurse is depletion, specifically potassium and magnesium, may
necessary with this drug? predispose to further dysrhythmia. Although it is always
Select all that apply. important to monitor vital signs and urine output, these
assessments are not specific to amiodarone.
a. Respiratory rate
b. QT interval
c. Heart rate and rhythm
d. Magnesium level
e. Urine output
,The nurse is caring for a client B
with acute coronary The effects of metoprolol are to decrease heart rate, blood
syndrome (ACS) and atrial pressure, and myocardial oxygen demand. ST segment
elevation is consistent with MI; it does not address
fibrillation who has a new
monitoring of metoprolol. Elevation in troponin is
prescription for metoprolol consistent with a diagnosis of MI but does not address
(Lopressor). Which needed monitoring for metoprolol. Elevation in myoglobin
monitoring is essential when is consistent with myocardial injury in ACS but does not
address needed monitoring related to metoprolol.
administering the
medication?
a. ST segment
b. Heart rate
c. Troponin
d. Myoglobin
The nurse is caring for a A
client with atrial fibrillation. Clients with atrial fibrillation are prone to blood pooling in
the atrium, clotting, then embolizing. Heparin is used to
In addition to an
prevent thrombus development in the atrium and the
antidysrhythmic, what consequence of embolization (i.e., stroke).
medication does the nurse
plan to administer?
a. Heparin
b. Atropine
c. Dobutamine
d. Magnesium sulfate
, The nurse is caring for a D
client on a telemetry unit The client is displaying sinus rhythm with first-degree
with a regular heart rhythm atrioventicular heart block; this is usually asymptomatic and
does not require treatment. Atropine is used in emergency
and rate of 60; a P wave
treatment of symptomatic bradycardia. This client has
precedes each QRS complex, normal vital signs. Digoxin is used in the treatment of atrial
and the PR interval is 0.24 fibrillation, which is, by definition, an irregular rhythm.
second. Additional vital signs Clonidine is used in the treatment of hypertension; a side
effect is bradycardia.
are as follows: blood
pressure 118/68, respiratory
rate 16, and temperature
98.8° F. The following
medications are available on
the medication record. What
action should the nurse take?
a. Administer atropine.
b. Administer digoxin.
c. Administer clonidine.
d. Continue to monitor.
50 Actual Questions with Answers & Rationales (A+
Guide Solution) Newest 2025/2026
Terms in this set (49)
A client's electrocardiogram A
strip shows atrial and
ventricular rates of 80
complexes per minute. The
PR interval is 0.14 second,
and the QRS complex
measures 0.08 second.
The nurse interprets this
rhythm is:
A) Normal sinus rhythm
B) Sinus bradycardia
C) Sinus tachycardia
D) Sinus dysrhythmia
,A client has frequent bursts D
of ventricular tachycardia on Ventricular tachycardia is a life-threatening dysrhythmia
the cardiac monitor. A nurse that results from an irritable ectopic focus that takes over as
is most concerned with this the pacemaker for the heart. The low cardiac output that
dysrhythmia because: results can lead quickly to cerebral and myocardial
ischemia. Client's frequently experience a feeling of
A) It is uncomfortable for the impending death. Ventricular tachycardia is treated with
client, giving a sense of antidysrhythmic medications or magnesium sulfate,
impending doom. B) It cardioversion
produces a high cardiac (client awake), or defibrillation (loss of consciousness),
output that quickly leads to Ventricular tachycardia can deteriorate into ventricular
defibrillation at any time.
cerebral and myocardial
ischemia.
C) It is almost
impossibleto convert to a
normal sinus rhythm.
D) It can develop
intoventricular fibrillation
at any time.
The nurse administers BCD
amiodarone (Cordarone) Amiodarone causes prolongation of the QT interval, which
can precipitate dysrhythmia. Antidysrhythmic medications
to a client with ventricular
cause changes in cardiac rhythm and rate; therefore
tachycardia. Which monitoring of heart rate and rhythm is needed.Electrolyte
monitoring by the nurse is depletion, specifically potassium and magnesium, may
necessary with this drug? predispose to further dysrhythmia. Although it is always
Select all that apply. important to monitor vital signs and urine output, these
assessments are not specific to amiodarone.
a. Respiratory rate
b. QT interval
c. Heart rate and rhythm
d. Magnesium level
e. Urine output
,The nurse is caring for a client B
with acute coronary The effects of metoprolol are to decrease heart rate, blood
syndrome (ACS) and atrial pressure, and myocardial oxygen demand. ST segment
elevation is consistent with MI; it does not address
fibrillation who has a new
monitoring of metoprolol. Elevation in troponin is
prescription for metoprolol consistent with a diagnosis of MI but does not address
(Lopressor). Which needed monitoring for metoprolol. Elevation in myoglobin
monitoring is essential when is consistent with myocardial injury in ACS but does not
address needed monitoring related to metoprolol.
administering the
medication?
a. ST segment
b. Heart rate
c. Troponin
d. Myoglobin
The nurse is caring for a A
client with atrial fibrillation. Clients with atrial fibrillation are prone to blood pooling in
the atrium, clotting, then embolizing. Heparin is used to
In addition to an
prevent thrombus development in the atrium and the
antidysrhythmic, what consequence of embolization (i.e., stroke).
medication does the nurse
plan to administer?
a. Heparin
b. Atropine
c. Dobutamine
d. Magnesium sulfate
, The nurse is caring for a D
client on a telemetry unit The client is displaying sinus rhythm with first-degree
with a regular heart rhythm atrioventicular heart block; this is usually asymptomatic and
does not require treatment. Atropine is used in emergency
and rate of 60; a P wave
treatment of symptomatic bradycardia. This client has
precedes each QRS complex, normal vital signs. Digoxin is used in the treatment of atrial
and the PR interval is 0.24 fibrillation, which is, by definition, an irregular rhythm.
second. Additional vital signs Clonidine is used in the treatment of hypertension; a side
effect is bradycardia.
are as follows: blood
pressure 118/68, respiratory
rate 16, and temperature
98.8° F. The following
medications are available on
the medication record. What
action should the nurse take?
a. Administer atropine.
b. Administer digoxin.
c. Administer clonidine.
d. Continue to monitor.
