3/2/25, 4:37 PM Relias Assessments Assistance Material DYSRHYTHMIAS Questions and Answers 2025 Flashcards | Quizlet
Relias Assessments Assistance Material
DYSRHYTHMIAS Questions and Answers 2025
Save
Terms in this set (21)
One of the most useful and commonly used
diagnostic tools is electrocardiography (EKG) which
measures the heart's electrical activity as waveforms.
An EKG uses electrodes attached to the skin to detect
electric current moving through the heart. These
signals are transmitted to produce a record of cardiac
EKG interpretation
activity. Arrhythmia or dysrhythmia are disturbances in
the normal cardiac rhythm of the heart which occurs
as a result of alterations within the conduction of
electrical impulses. These impulses stimulate and
coordinate atrial and ventricular myocardial
contractions that provide cardiac output.
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, 3/2/25, 4:37 PM Relias Assessments Assistance Material DYSRHYTHMIAS Questions and Answers 2025 Flashcards | Quizlet
Sinus tachycardia is a heart rate greater than 100 beats
per minute that originated from the sinus node.
Rate: 100 to 180 beats per minute
P Waves precede each QRS complex
PR interval is normal
QRS complex is normal
Conduction is normal
Sinus Tachycardia Rhythm is regular
Causes of sinus tachycardia may include exercise,
anxiety, fever, drugs, anemia, heart failure,
hypovolemia and shock. Sinus tachycardia is often
asymptomatic. Management however is directed at
the treatment of the primary cause. Carotid sinus
pressure (carotid massage) or a beta blocker may be
used to reduce heart rate.
Sinus bradycardia is a heart rate less than 60 beats per
minute and originates from the sinus node (as the
term "sinus" refers to sinoatrial node). It has the
following characteristics
Rate is less than 60 beats per minute
P Waves precede each QRS complex
PR interval is normal
QRS complex is normal
Conduction is normal
Sinus Bradycardia Rhythm is regular
Causes may include drugs, vagal stimulation,
hypoendocrine states, hypothermia, or sinus node
involvement in MI. This arrhythmia may be normal in
athletes as they have quality stroke volume. It is often
asymptomatic but manifestations may include:
syncope, fatigue, dizziness. Management includes
treating the underlying cause and administering
anticholinergic drugs like atropine sulfate as
prescribed.
https://quizlet.com/1012714068/relias-assessments-assistance-material-dysrhythmias-questions-and-answers-2025-flash-cards/?new 2/10
Relias Assessments Assistance Material
DYSRHYTHMIAS Questions and Answers 2025
Save
Terms in this set (21)
One of the most useful and commonly used
diagnostic tools is electrocardiography (EKG) which
measures the heart's electrical activity as waveforms.
An EKG uses electrodes attached to the skin to detect
electric current moving through the heart. These
signals are transmitted to produce a record of cardiac
EKG interpretation
activity. Arrhythmia or dysrhythmia are disturbances in
the normal cardiac rhythm of the heart which occurs
as a result of alterations within the conduction of
electrical impulses. These impulses stimulate and
coordinate atrial and ventricular myocardial
contractions that provide cardiac output.
https://quizlet.com/1012714068/relias-assessments-assistance-material-dysrhythmias-questions-and-answers-2025-flash-cards/?new 1/10
, 3/2/25, 4:37 PM Relias Assessments Assistance Material DYSRHYTHMIAS Questions and Answers 2025 Flashcards | Quizlet
Sinus tachycardia is a heart rate greater than 100 beats
per minute that originated from the sinus node.
Rate: 100 to 180 beats per minute
P Waves precede each QRS complex
PR interval is normal
QRS complex is normal
Conduction is normal
Sinus Tachycardia Rhythm is regular
Causes of sinus tachycardia may include exercise,
anxiety, fever, drugs, anemia, heart failure,
hypovolemia and shock. Sinus tachycardia is often
asymptomatic. Management however is directed at
the treatment of the primary cause. Carotid sinus
pressure (carotid massage) or a beta blocker may be
used to reduce heart rate.
Sinus bradycardia is a heart rate less than 60 beats per
minute and originates from the sinus node (as the
term "sinus" refers to sinoatrial node). It has the
following characteristics
Rate is less than 60 beats per minute
P Waves precede each QRS complex
PR interval is normal
QRS complex is normal
Conduction is normal
Sinus Bradycardia Rhythm is regular
Causes may include drugs, vagal stimulation,
hypoendocrine states, hypothermia, or sinus node
involvement in MI. This arrhythmia may be normal in
athletes as they have quality stroke volume. It is often
asymptomatic but manifestations may include:
syncope, fatigue, dizziness. Management includes
treating the underlying cause and administering
anticholinergic drugs like atropine sulfate as
prescribed.
https://quizlet.com/1012714068/relias-assessments-assistance-material-dysrhythmias-questions-and-answers-2025-flash-cards/?new 2/10
