Cardiac Monitoring Quiz
Explore Electrocardiography with 12 questions. Assess your understanding of ECG components, rhythms, and interpretations.
#1
Which of the following is not a component of an ECG?
P-wave
T-wave
Z-wave
QRS complex
#2
What is the normal duration of the PR interval in an ECG?
0.06 - 0.12 seconds
0.12 - 0.20 seconds
0.20 - 0.30 seconds
0.30 - 0.40 seconds
#3
What does the QRS complex represent in an ECG?
Atrial depolarization
Ventricular repolarization
Ventricular depolarization
Atrial repolarization
#4
What rhythm does a 'sawtooth' pattern in an ECG typically indicate?
Sinus bradycardia
Atrial fibrillation
Ventricular tachycardia
Junctional rhythm
#5
Which electrolyte imbalance may cause a prolonged QT interval in an ECG?
Hypernatremia
Hyperkalemia
Hypomagnesemia
Hypocalcemia
#6
What is the normal heart rate range for sinus rhythm in adults?
60 - 100 bpm
40 - 60 bpm
100 - 160 bpm
20 - 40 bpm
#7
Which lead in a 12-lead ECG is used to assess the anterior wall of the heart?
Lead I
Lead II
Lead V1
Lead V6
#8
What does an elevated ST segment in an ECG usually suggest?
Hyperkalemia
Myocardial infarction
Atrial flutter
Ventricular fibrillation
#9
Which lead in a 12-lead ECG corresponds to the lateral wall of the heart?
Lead I
Lead II
Lead aVF
Lead V6
#10
Which ECG lead is often used to assess inferior myocardial infarction?
Lead I
Lead II
Lead III
Lead aVL
#11
What does a 'cannon A-wave' indicate in an ECG?
Ventricular bigeminy
Atrial fibrillation
Complete heart block
Atrial contraction against a closed tricuspid valve
#12
What does the 'J-point' represent in an ECG tracing?
The end of atrial depolarization
The beginning of ventricular depolarization
The point where the QRS complex meets the ST segment
The end of the T-wave
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