2. Rhythm

Question 1

List the steps of the systematic approach to EKG interpretation.

Answer 1

1. Rate
2. Rhythm
3. Axis
4. Intervals
5. P wave
6. QRS complex
7. ST & T

Question 2

Describe paroxysmal supraventricular Tachykardia.

Answer 2

• regular RR intervals
• no visible P waves
• no flutter-like P-waves

Question 3

Interpret this EKG

Answer 3

Paroxysmal supraventricular Tachykardia

Question 4

Describe atrial Fibrillation

Answer 4

• irregular RR intervals
• chaotic fibrillatory P waves

Question 5

Interpret this EKG.

Answer 5

Atrial fibtrillation

Question 6

Describe atrial Flutter.

Answer 6

• Regular (occasionally irregular) R-R intervals
• Sawtooth flutter waves (F-waves), best in leads II, III, aVF
• Atrial rate 250–350 bpm
• Narrow QRS (unless a conduction defect is present)

Question 7

Interpret this EKG.

Answer 7

Atrial Flutter

Question 8

What is the heart rate that most commonly accompanies atrial Flutter?

Answer 8

150 bpm

Question 9

Describe multifocal atrial Tachykardia.

Answer 9

✔ Irregular rhythm
✔ At least three distinct P wave morphologies
✔ Varying PR intervals
✔ Narrow QRS complexes
✔ Atrial rate >100 bpm