Cardiac Arrhythmias and Heart Failure Nursing
Care: Key Concepts and Interventions – Questions
& Solutions
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Terms in this set (105)
What is the primary function of the It generates electrical impulses at a rate of 60 to 100
sinoatrial (SA) node? beats per minute.
What is the heart rate range for the 40 to 60 beats per minute.
atrioventricular (AV) node?
What does an electrocardiogram It shows the cardiac electrical activity.
(ECG) show?
What is the purpose of the PR interval It measures the time from the beginning of the P
on an ECG? wave to the beginning of the QRS complex, normally
0.12 to 0.20 seconds.
What does the QRS complex It represents ventricular depolarization.
represent?
What is the normal range for the QT 0.34 to 0.43 seconds.
interval?
What does a prolonged QT interval It can lead to ventricular arrhythmias.
indicate?
What is the significance of the U wave It is rare and indicates hypokalemia.
on an ECG?
What does the ST segment indicate? It indicates the period from the end of the QRS
complex to the beginning of the T wave.
, What are the six steps used for 1. Regularity of rhythm 2. Heart rate 3. P wave 4. PR
arrhythmia interpretation? interval 5. QRS interval 6. QT interval
What defines normal sinus rhythm? Rhythm: Regular, Heart rate: 60 to 100 bpm, P wave:
Rounded and upright before each QRS, PR interval:
0.12 to 0.20 seconds, QRS interval: <0.10 seconds.
What is sinus bradycardia? A rhythm with a heart rate of less than 60 beats per
minute.
What are the signs and symptoms of May be asymptomatic or present with fatigue and
sinus bradycardia? fainting.
What is the treatment for None required; if symptomatic, may use oxygen,
asymptomatic sinus bradycardia? atropine, dopamine, or pacing.
What defines sinus tachycardia? A rhythm with a heart rate of 101 to 180 beats per
minute.
What are common therapeutic Treat the underlying cause, and may include
interventions for sinus tachycardia? medications like adenosine, beta blockers, or calcium
channel blockers.
What are premature atrial contractions Early beats that interrupt the rhythm, with abnormal P
(PACs)? waves.
What is atrial flutter characterized by? Regular atrial rhythm with F waves in a sawtooth
pattern.
What is a key characteristic of atrial An irregularly irregular rhythm with no identifiable P
fibrillation? waves.
What are the signs and symptoms of Palpitations and faint radial pulse.
atrial fibrillation?
What is the recommended action for a Take vital signs and collect patient data; inform the
patient with an irregularly irregular healthcare provider.
pulse?
Care: Key Concepts and Interventions – Questions
& Solutions
Save
Terms in this set (105)
What is the primary function of the It generates electrical impulses at a rate of 60 to 100
sinoatrial (SA) node? beats per minute.
What is the heart rate range for the 40 to 60 beats per minute.
atrioventricular (AV) node?
What does an electrocardiogram It shows the cardiac electrical activity.
(ECG) show?
What is the purpose of the PR interval It measures the time from the beginning of the P
on an ECG? wave to the beginning of the QRS complex, normally
0.12 to 0.20 seconds.
What does the QRS complex It represents ventricular depolarization.
represent?
What is the normal range for the QT 0.34 to 0.43 seconds.
interval?
What does a prolonged QT interval It can lead to ventricular arrhythmias.
indicate?
What is the significance of the U wave It is rare and indicates hypokalemia.
on an ECG?
What does the ST segment indicate? It indicates the period from the end of the QRS
complex to the beginning of the T wave.
, What are the six steps used for 1. Regularity of rhythm 2. Heart rate 3. P wave 4. PR
arrhythmia interpretation? interval 5. QRS interval 6. QT interval
What defines normal sinus rhythm? Rhythm: Regular, Heart rate: 60 to 100 bpm, P wave:
Rounded and upright before each QRS, PR interval:
0.12 to 0.20 seconds, QRS interval: <0.10 seconds.
What is sinus bradycardia? A rhythm with a heart rate of less than 60 beats per
minute.
What are the signs and symptoms of May be asymptomatic or present with fatigue and
sinus bradycardia? fainting.
What is the treatment for None required; if symptomatic, may use oxygen,
asymptomatic sinus bradycardia? atropine, dopamine, or pacing.
What defines sinus tachycardia? A rhythm with a heart rate of 101 to 180 beats per
minute.
What are common therapeutic Treat the underlying cause, and may include
interventions for sinus tachycardia? medications like adenosine, beta blockers, or calcium
channel blockers.
What are premature atrial contractions Early beats that interrupt the rhythm, with abnormal P
(PACs)? waves.
What is atrial flutter characterized by? Regular atrial rhythm with F waves in a sawtooth
pattern.
What is a key characteristic of atrial An irregularly irregular rhythm with no identifiable P
fibrillation? waves.
What are the signs and symptoms of Palpitations and faint radial pulse.
atrial fibrillation?
What is the recommended action for a Take vital signs and collect patient data; inform the
patient with an irregularly irregular healthcare provider.
pulse?
