Exam (elaborations)
Chapter 34 Care of Patients with Dysrhythmias Questions and Answers 2024
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Chapter 34 Care of Patients with Dysrhythmias
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Chapter 34 Care of Patients withDysrhythmias
What part of the cardiac conduction system is responsible for ventricular depolarization?
-Purkinje fibers
-Sinoatrial (SA) node
-Transitional cell zone
-Atrioventricular (AV) node - answerPurkinje fibers
Which property of the heart is considered its mechanical activity?
-Excitability
-Conductivity
-Automaticity
-Contractility - answerContractility
The nurse is attempting to analyze an electrocardiogram (ECG) strip. How many large
blocks represent a 6-second strip?
5
15
25
30 - answer30
What part of the conduction system is responsible for the contraction of ventricles?
-Purkinje fibers
-Sinoatrial (SA) node
-Transitional cell zone
-Atrioventricular (AV) node - answerPurkinje fibers
Which action is occurring in a patient's conduction system during the circled part of the
electrocardiogram (ECG) waveform?
-Atrial kick
-Atrial depolarization
-Ventricular contraction
-T-cell (transitional cell) impulse slowing - answerAtrial depolarization
Using calipers, the nurse has marked out the P to P intervals. The nurse recognizes a
variation of two small blocks. Which action should the nurse take first?
,-Contact the health care provider
-Document the rhythm as regular
-Verify that the leads are still attached to the patient
-Ask the patient if they would like PRN pain medication - answerDocument the rhythm
as regular
The nurse teaches a patient diagnosed with atrial fibrillation about verapamil
hydrochloride, a new prescription the patient will be taking orally at home. Which
statement by the patient indicates the teaching was successful?
-'I will need to check my pulse every 8 hours.'
-'I should lay flat for an hour after I take the medicine.'
-'I will bear down if I feel my heart starting to beat fast.'
-'I will take my time getting up and changing positions.' - answer'I will take my time
getting up and changing positions.'
The nurse is caring for a patient who was admitted with chest pain. While performing a
cardiac assessment, the nurse determines that the patient's apical pulse is 90, and the
radial pulse is 75. What action by the nurse is priority?
-Contact the health care provider
-Document the findings in the chart
-Assess the patient's blood pressure
-Administer PRN nitroglycerin sublingual - answerContact the health care provider
The patient has two premature ventricular contractions (PVCs) that are repeating in
their cardiac rhythm every 3 seconds. The nurse correctly documents this as which type
of rhythm?
-Unifocal PVC
-Multifocal PVC
-Bigeminal PVCs
-Nonsustained ventricular tachycardia - answerBigeminal PVCs
The nurse is providing discharge instructions to a patient diagnosed with vasovagal
bradycardia. Which instruction should the nurse include?
-'It is important to avoid constipation.'
-'If you feel your heart slowing, raise your hands over your head.'
-'If you feel lightheaded or faint, it is important to try to bear down.'
-'Gentle pressure over your carotid artery may help with increasing your heart rate.' -
answer'It is important to avoid constipation.'
,The nurse is caring for a patient with a ventricular fibrillation. The patient has had three
cycles of CPR after receiving an initial shock. When should the nurse plan to administer
another shock?
-In approximately 4 minutes
-After two more cycles of CPR
-Defibrillation cannot be used twice
-After the adenosine has been administered - answerAfter two more cycles of CPR
The nurse is educating a patient diagnosed with premature ventricular contractions
(PVCs). The patient has been experiencing 1000-1500 PVCs in a 24-hour period.
Which treatment education should be included in the teaching?
-Stress management
-Low potassium diet
-Beta-adrenergic blocking agent
-Battery replacement for a biventricular pacemaker - answerStress management
The emergency room nurse is caring for a patient with a suspected myocardial
infarction. What component of the patient's cardiac rhythm should be evaluated further
for this suspected diagnosis? Select all that apply.
-P wave
-T wave
-PR interval
-ST segment
-QRS complex - answer-T wave
-ST segment
The nurse is analyzing the electrocardiographic rhythm of a patient and identifies an
abnormal T wave. What problems are potential causes for this abnormality? Select all
that apply.
-Anxiety
-Nicotine use
-Myocardial infarction
-Ventricular hypertrophy
-Chronic obstructive pulmonary disease (COPD) - answer-Myocardial infarction
-Ventricular hypertrophy
What drug is an antidysrhythmic drug used to slow ventricular conduction?
-Diltiazem
-Apixaban
-Atropine sulfate
-Magnesium sulfate - answerDiltiazem
, Which finding on an electrocardiogram (ECG) strip is characterized as normal?
-PR interval of 0.25 seconds
-Ventricular rate of 105 bpm
-QRS duration of 0.05 seconds
-P waves present after QRS complex - answerQRS duration of 0.05 seconds
The nurse is performing chest compressions on a patient in asystole. Another nurse
enters the room with the defibrillator. What action by the first nurse is priority?
-Continue compressions
-Clear the area of movable items
-Analyze the patient's cardiac rhythm
-Step away to allow the defibrillator to be set up - answerContinue compressions
The nurse looks at the monitor and notices ventricular tachycardia. What action should
the nurse take first?
-Call for help
-Assess the patient
-Begin cardiopulmonary resuscitation (CPR)
-Prepare to administer intravenous (IV) lidocaine - answerAssess the patient
The nurse is caring for a patient who is undergoing synchronized cardioversion. Which
interventions are the nurse responsible for after the cardioversion? Select all that apply.
-Maintaining a patent airway
-Monitoring for dysrhythmias
-Assessing the need for further cardioversion
-Assessing the chest for burns from electrodes
-Ordering a post-cardioversion transesophageal echocardiogram - answer-Maintaining
a patent airway
-Monitoring for dysrhythmias
-Assessing the chest for burns from electrodes
The nurse is evaluating a patient's electrocardiogram (ECG) rhythm strip. The nurse
notes the presence of a U wave. What action by the nurse is priority?
-Check the patient's lead placement
-Prepare to administer magnesium sulfate
-Document the findings in the patient's chart
-Request that a stat potassium level is obtained - answerRequest that a stat potassium
level is obtained
What is the function of T cells in the atrioventricular junction area?
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