Values - ECG

Question 1

Chart speed

Answer 1

25mm/s

Question 2

AV conduction time (PR interval)

Answer 2

0.12 - 0.2 s (1 big square)

Question 3

Width of QRS complex

Answer 3

0.06 - 0.1s

should be < 0.12 (three squares)

Question 4

Pathological Q wave

• Width
• Amplitude

Answer 4

Width: ≥ 0.04 s
Ampl: > 0.4 mV or 25% of R amplitude

Question 5

MEA

Answer 5

0-90degrees

Question 6

DIAGNOSIS of ECG (1-11)

Answer 6

1. Rhythmic?
2. HR
3. Impulse formation? (check P wave in lead II and aVR)
4. P wave morphology
5. PR interval (0.12-0.2)
6. Every P followed by QRS?
7. Wide QRS?
8. MEA
9. Pathological Q wave in lateral and inf. leads? –> MI/BBB (wider than 0.04)
10. ST segment and T wave
11. Hypertrophy?