What causes PR segment?

Related questions

1. What is a normal PR?
2. What does Q represent on ECG?
3. What is a normal ST segment?
4. What does a prolonged PR interval indicate?
5. Why is it called PR interval?
6. What is PR on ECG?
7. What is a normal PR interval?
8. What is PR depression?
9. What is sinus tachycardia with short PR?
10. What is normal PR interval in ECG?

Tags

1. #versa
2. #sound
3. #cause
4. #complex
5. #representing
6. #first
7. #indicating
8. #depolarization
9. #atrial
10. #ventricular
11. #longer
12. #interval
13. #heart
14. #examination
15. #beginning