Lewis Ch35 Dysrhythmias Student Review Questions 100%
Correct Answers | Verified | Latest 2025 Version
The nurse observes no P waves on the patients monitor strip. There are fine, wavy lines between
the QRS complexes. The QRS complexes measure 0.08 sec (narrow), but they occur irregularly
with a rate of 120 beats/min. What does the nurse determine the rhythm to be?
a. Sinus tachycardia
b. Atrial fibrillation
c. Ventricular fibrillation
d. Ventricular tachycardia - ANSWER- b. Atrial fibrillation
When computing a heart rate from the electrocardiography (ECG) tracing, the nurse counts 15 of
the small blocks between the R waves of a patient whose rhythm is regular. What does the nurse
calculate the patient's heart rate to be?
a. 60 beats/min
b. 75 beats/min
c. 100 beats/min
d. 150 beats/min - ANSWER- c. 100 beats/min
The nurse observes a flat line on the patient's monitor and the patient is unresponsive without
pulse. What medications does the nurse prepare to administer?
a. idocaine or amiodarone
b. Digoxin and procainamide
c. Epinephrine or vasopressin
d. β-Adrenergic blockers and dopamine - ANSWER- c. Epinephrine and/or vasopressin
, Cardioversion is attempted for a patient with atrial flutter and a rapid ventricular response. After
the delivering 50 joules by synchronized cardioversion, the patient develops ventricular
fibrillation. Which action should the nurse take immediately?
a. Administer 250 mL of 0.9% saline solution IV by rapid bolus.
b. Assess the apical pulse, blood pressure, and bilateral neck vein distention.
c. Turn the synchronizer switch to the "off" position and recharge the device.
d. Ask the patient if there is any chest pain or discomfort and administer morphine sulfate. -
ANSWER- c. Turn the synchronizer switch to the "off" position and recharge the device.
The patient is admitted with acute coronary syndrome (ACS). The ECG shows ST-segment
depression and T-wave inversion. What should the nurse know that this indicates?
a. Myocardia injury
b. Myocardial ischemia
c. Myocardial infarction
d. Normal pacemaker function. - ANSWER- b. Myocardial ischemia
A patient informs the nurse of experiencing syncope. Which nursing action should the nurse
prioritize in the patient's subsequent diagnostic workup?
a. Preparing to assist with a head-up tilt-test
b. Assessing the patient's knowledge of pacemakers
c. Administering an IV dose of a β-adrenergic blocker
d. Teaching the patient about antiplatelet aggregators - ANSWER- a. Preparing to assist with a
head-up tilt-test
The patient has atrial fibrillation with a rapid ventricular response. What electrical treatment
option does the nurse prepare the patient for?
a. Defibrillation
b. Synchronized cardioversion
c. Automatic external defibrillator (AED)
d. Implantable cardioverter-defibrillator (ICD) - ANSWER- b. Synchronized cardioversion
Correct Answers | Verified | Latest 2025 Version
The nurse observes no P waves on the patients monitor strip. There are fine, wavy lines between
the QRS complexes. The QRS complexes measure 0.08 sec (narrow), but they occur irregularly
with a rate of 120 beats/min. What does the nurse determine the rhythm to be?
a. Sinus tachycardia
b. Atrial fibrillation
c. Ventricular fibrillation
d. Ventricular tachycardia - ANSWER- b. Atrial fibrillation
When computing a heart rate from the electrocardiography (ECG) tracing, the nurse counts 15 of
the small blocks between the R waves of a patient whose rhythm is regular. What does the nurse
calculate the patient's heart rate to be?
a. 60 beats/min
b. 75 beats/min
c. 100 beats/min
d. 150 beats/min - ANSWER- c. 100 beats/min
The nurse observes a flat line on the patient's monitor and the patient is unresponsive without
pulse. What medications does the nurse prepare to administer?
a. idocaine or amiodarone
b. Digoxin and procainamide
c. Epinephrine or vasopressin
d. β-Adrenergic blockers and dopamine - ANSWER- c. Epinephrine and/or vasopressin
, Cardioversion is attempted for a patient with atrial flutter and a rapid ventricular response. After
the delivering 50 joules by synchronized cardioversion, the patient develops ventricular
fibrillation. Which action should the nurse take immediately?
a. Administer 250 mL of 0.9% saline solution IV by rapid bolus.
b. Assess the apical pulse, blood pressure, and bilateral neck vein distention.
c. Turn the synchronizer switch to the "off" position and recharge the device.
d. Ask the patient if there is any chest pain or discomfort and administer morphine sulfate. -
ANSWER- c. Turn the synchronizer switch to the "off" position and recharge the device.
The patient is admitted with acute coronary syndrome (ACS). The ECG shows ST-segment
depression and T-wave inversion. What should the nurse know that this indicates?
a. Myocardia injury
b. Myocardial ischemia
c. Myocardial infarction
d. Normal pacemaker function. - ANSWER- b. Myocardial ischemia
A patient informs the nurse of experiencing syncope. Which nursing action should the nurse
prioritize in the patient's subsequent diagnostic workup?
a. Preparing to assist with a head-up tilt-test
b. Assessing the patient's knowledge of pacemakers
c. Administering an IV dose of a β-adrenergic blocker
d. Teaching the patient about antiplatelet aggregators - ANSWER- a. Preparing to assist with a
head-up tilt-test
The patient has atrial fibrillation with a rapid ventricular response. What electrical treatment
option does the nurse prepare the patient for?
a. Defibrillation
b. Synchronized cardioversion
c. Automatic external defibrillator (AED)
d. Implantable cardioverter-defibrillator (ICD) - ANSWER- b. Synchronized cardioversion
