EKG INTERPRETATION Questions with Correct Solutions
Question:
1. Accelerated Idioventricular Rhythm
Answer:
Rhythm: Regular Rate: 50-120 bpm P Wave: Absent PR Interval: Not measurable QRS: Wide
(>0.10 sec), bizarre looking
Question:
2. Accelerated Junctional Rhythm
Answer:
Question:
3. Atrial Fibrilation
Answer:
Irregularly irregular with no discernible p wave Rhythm: Irregular Rate: Very fast (> 350
bpm) for Atrial, but ventricular rate may be slow, normal or fast P Wave: Absent - erratic
waves are present PR Interval: Absent QRS: Normal but may be widened if there are
conduction delays Cause: continuous rapid-firing of multiple atrial automaticity foci. No
complete depolarization of atria.
Question:
4. Atrial Flutter
Answer:
Rhythm: Regular or irregular Rate: Fast (250-350 bpm) for Atrial, but ventricular rate is often
slower P Wave: Not observable, but saw-toothed flutter waves are present PR Interval: Not
measureable QRS: Normal (0.06-0.10 sec)
, Question:
5. Ventricular Flutter
Answer:
Rate: 250-350bpm Smooth sine waves of similar amplitude. So rapid that ventricles hardly
have time to fill.
Question:
6. Bundle Branch Block
Answer:
Rhythm: Regular Rate: The underlying rate P Wave: Normal PR Interval: Normal (0.12-0.20
sec) QRS: Wide (>0.12 sec)
Question:
7. First Degree Heart Block
Answer:
Rhythm: Regular Rate: The underlying rate P Wave: Normal PR Interval: Prolonged (>0.20
sec) QRS: Normal (0.06-0.10 sec) Notes A first degree AV block occurs when electrical
impulses moving through the Atrioventricular (AV) node are delayed (but not blocked). First
degree indicates slowed conduction without missed beats.
Question:
8. Idioventricular Rhythm
Answer:
Rhythm: Regular Rate: Slow (20-40 bpm) P Wave: Absent PR Interval: Not measurable QRS:
Wide (>0.10 sec), bizarre appearance
Question:
1. Accelerated Idioventricular Rhythm
Answer:
Rhythm: Regular Rate: 50-120 bpm P Wave: Absent PR Interval: Not measurable QRS: Wide
(>0.10 sec), bizarre looking
Question:
2. Accelerated Junctional Rhythm
Answer:
Question:
3. Atrial Fibrilation
Answer:
Irregularly irregular with no discernible p wave Rhythm: Irregular Rate: Very fast (> 350
bpm) for Atrial, but ventricular rate may be slow, normal or fast P Wave: Absent - erratic
waves are present PR Interval: Absent QRS: Normal but may be widened if there are
conduction delays Cause: continuous rapid-firing of multiple atrial automaticity foci. No
complete depolarization of atria.
Question:
4. Atrial Flutter
Answer:
Rhythm: Regular or irregular Rate: Fast (250-350 bpm) for Atrial, but ventricular rate is often
slower P Wave: Not observable, but saw-toothed flutter waves are present PR Interval: Not
measureable QRS: Normal (0.06-0.10 sec)
, Question:
5. Ventricular Flutter
Answer:
Rate: 250-350bpm Smooth sine waves of similar amplitude. So rapid that ventricles hardly
have time to fill.
Question:
6. Bundle Branch Block
Answer:
Rhythm: Regular Rate: The underlying rate P Wave: Normal PR Interval: Normal (0.12-0.20
sec) QRS: Wide (>0.12 sec)
Question:
7. First Degree Heart Block
Answer:
Rhythm: Regular Rate: The underlying rate P Wave: Normal PR Interval: Prolonged (>0.20
sec) QRS: Normal (0.06-0.10 sec) Notes A first degree AV block occurs when electrical
impulses moving through the Atrioventricular (AV) node are delayed (but not blocked). First
degree indicates slowed conduction without missed beats.
Question:
8. Idioventricular Rhythm
Answer:
Rhythm: Regular Rate: Slow (20-40 bpm) P Wave: Absent PR Interval: Not measurable QRS:
Wide (>0.10 sec), bizarre appearance
