NURS - ECG Rhythm Identification and
Application to Practice (Pre-Test)
How long is a normal QRS interval?
A. < 0.12 seconds
B. 0.10 to 0.20 seconds
C. 0.32 to 0.36 seconds
D. 0.12 to 0.20 seconds - answerA
How long is a normal PR interval?
A. 0.04 to 0.12 seconds
B. 0.12 to 0.20 seconds
C. 0.12 to 0.36 seconds
D. 1.2 to 2.0 seconds - answerB
Identify the following rhythm (strip shows 4 QRS with obvious correspondiing P waves
and T waves. Waves within expected intervals)
A. Atrial fibrillation
B. Junctional rhythm
C. Sinus bradycardia
D. Normal sinus rhythm - answerC
What does the T-wave represent?
A. Atrial repolarization
B. Atrial depolarization
C. Ventricular repolarization
D. Ventricular depolarization - answerC
Identify the rhythm strip (strip shows 9 QRS with obvious correspondiing P waves and T
waves. Waves within expected intervals)
A. Normal sinus rhythm
B. Sinus bradycardia
C. Sinus tachycardia
D. Sinus arrhythmia - answerA
Identify the rhythm strip (strip shows 11 inverted QRS complexes with corresponding p
waves, inverted t waves and a pause after the 8th complex)
, A. Atrial fibrillation
B. Sinus tachycardia
C. Sinus arrhythmia
D. Normal sinus rhythm with sinus block - answerD
Identify the rhythm strip (strip shows 7 QRS complex with sawtooth p waves in between
each complex)
A. Premature atrial contractions
B. Atrial fibrillation
C. Atrial tachycardia
D. Atrial flutter - answerD
Identify the rhythm strip (strip shows 9 unevenly spaced QRS complexes with
unidentifiable p waves in between each complex)
A. Premature atrial contraction
B. Atrial fibrillation
C. Atrial flutter
D. Atrial tachycardia - answerA
Identify the rhythm strip (strip shows 19.5 QRS complexes with corresponding T waves,
P waves buried in the T waves)
A. Supraventricular tachycardia (SVT)
B. Sinus tachycardia
C. Rapid atrial fibrillation
D. Atrial flutter - answerA
Your patient complains of new onset chest pain. You note the following rhythm. Which
of the below is an appropriate nursing intervention? (strip shows 8 QRS complexes,
every third complex is widened and T wave is depressed. P waves and normal T waves
present with normal complexes.
A. Call a CPA and start compressions
B. Attach pads and prepare for cardioversion
C. Assess patient and consider a 12-lead EKG
D. No interventions are needed. Continue to monitor. - answerC
Identify the rhythm strip (strip looks like a toddler taking a lie detector test to determine
who ate the last cookie; traditional "twisting" pattern for this rhythm)
A. Torsades de pointes
B. Ventricular fibrillation
C. Atrial fibrillation
Application to Practice (Pre-Test)
How long is a normal QRS interval?
A. < 0.12 seconds
B. 0.10 to 0.20 seconds
C. 0.32 to 0.36 seconds
D. 0.12 to 0.20 seconds - answerA
How long is a normal PR interval?
A. 0.04 to 0.12 seconds
B. 0.12 to 0.20 seconds
C. 0.12 to 0.36 seconds
D. 1.2 to 2.0 seconds - answerB
Identify the following rhythm (strip shows 4 QRS with obvious correspondiing P waves
and T waves. Waves within expected intervals)
A. Atrial fibrillation
B. Junctional rhythm
C. Sinus bradycardia
D. Normal sinus rhythm - answerC
What does the T-wave represent?
A. Atrial repolarization
B. Atrial depolarization
C. Ventricular repolarization
D. Ventricular depolarization - answerC
Identify the rhythm strip (strip shows 9 QRS with obvious correspondiing P waves and T
waves. Waves within expected intervals)
A. Normal sinus rhythm
B. Sinus bradycardia
C. Sinus tachycardia
D. Sinus arrhythmia - answerA
Identify the rhythm strip (strip shows 11 inverted QRS complexes with corresponding p
waves, inverted t waves and a pause after the 8th complex)
, A. Atrial fibrillation
B. Sinus tachycardia
C. Sinus arrhythmia
D. Normal sinus rhythm with sinus block - answerD
Identify the rhythm strip (strip shows 7 QRS complex with sawtooth p waves in between
each complex)
A. Premature atrial contractions
B. Atrial fibrillation
C. Atrial tachycardia
D. Atrial flutter - answerD
Identify the rhythm strip (strip shows 9 unevenly spaced QRS complexes with
unidentifiable p waves in between each complex)
A. Premature atrial contraction
B. Atrial fibrillation
C. Atrial flutter
D. Atrial tachycardia - answerA
Identify the rhythm strip (strip shows 19.5 QRS complexes with corresponding T waves,
P waves buried in the T waves)
A. Supraventricular tachycardia (SVT)
B. Sinus tachycardia
C. Rapid atrial fibrillation
D. Atrial flutter - answerA
Your patient complains of new onset chest pain. You note the following rhythm. Which
of the below is an appropriate nursing intervention? (strip shows 8 QRS complexes,
every third complex is widened and T wave is depressed. P waves and normal T waves
present with normal complexes.
A. Call a CPA and start compressions
B. Attach pads and prepare for cardioversion
C. Assess patient and consider a 12-lead EKG
D. No interventions are needed. Continue to monitor. - answerC
Identify the rhythm strip (strip looks like a toddler taking a lie detector test to determine
who ate the last cookie; traditional "twisting" pattern for this rhythm)
A. Torsades de pointes
B. Ventricular fibrillation
C. Atrial fibrillation
