AdventHealth ECG Study Guide 2026 | 2027Arrhythmias,
Heart Blocks & Rhythm Interpretation | Graded A+
1. Which of the following rates BEST represent the inherent heart rate generated
via the ventricle at the level of the bundle branches?
20-40
80-100
40-60
60-80
2. Describe the significance of the P wave in the context of cardiac function.
The P wave indicates atrial depolarization, which is crucial for
initiating the contraction of the atria.
The P wave signifies the repolarization of the ventricles after
contraction.
The P wave indicates ventricular depolarization, which is essential for
pumping blood.
The P wave represents the heart's resting state before contraction.
3. The AV node generates an impulse rate of how many beats per minute
(bpm)?
40-60
20-30
60-80
4. What is the normal measurement of the PR interval in an ECG?
less than 0.11 sec
, 0.16-0.26 sec
0.06-0.10 sec
0.12-0.20 sec
5. A first degree heart block is best characterized by:
A prolonged PR interval
No relationship between QRS complexes and P waves
A completely normal EKG
A progressively increased PR interval, then a missing QRS, in a cyclical
pattern
6. What is the normal duration of the PR interval in seconds?
0.15 to 0.30 seconds
0.08 to 0.10 seconds
0.12 to 0.20 seconds
0.20 to 0.25 seconds
7. The ST segment may be:
affected by myocardial infarction.
isoelectric in the presence of ischemia.
positive and rounded.
invisible in the normal ECG.
8. Describe the significance of the PR interval in EKG interpretation.
The PR interval indicates the heart rate.
Heart Blocks & Rhythm Interpretation | Graded A+
1. Which of the following rates BEST represent the inherent heart rate generated
via the ventricle at the level of the bundle branches?
20-40
80-100
40-60
60-80
2. Describe the significance of the P wave in the context of cardiac function.
The P wave indicates atrial depolarization, which is crucial for
initiating the contraction of the atria.
The P wave signifies the repolarization of the ventricles after
contraction.
The P wave indicates ventricular depolarization, which is essential for
pumping blood.
The P wave represents the heart's resting state before contraction.
3. The AV node generates an impulse rate of how many beats per minute
(bpm)?
40-60
20-30
60-80
4. What is the normal measurement of the PR interval in an ECG?
less than 0.11 sec
, 0.16-0.26 sec
0.06-0.10 sec
0.12-0.20 sec
5. A first degree heart block is best characterized by:
A prolonged PR interval
No relationship between QRS complexes and P waves
A completely normal EKG
A progressively increased PR interval, then a missing QRS, in a cyclical
pattern
6. What is the normal duration of the PR interval in seconds?
0.15 to 0.30 seconds
0.08 to 0.10 seconds
0.12 to 0.20 seconds
0.20 to 0.25 seconds
7. The ST segment may be:
affected by myocardial infarction.
isoelectric in the presence of ischemia.
positive and rounded.
invisible in the normal ECG.
8. Describe the significance of the PR interval in EKG interpretation.
The PR interval indicates the heart rate.
