What causes the PR segment?

Related questions

1. Can stress cause short PR interval?
2. What causes short PR syndrome?
3. What causes PR segment depression?
4. What is normal ST segment?
5. What does short PR mean on ECG?
6. What happens during the ST segment?
7. What is a 1st degree AV block?
8. Why is it called PR interval and not PQ interval?
9. What is a short PR syndrome?
10. What is short PR?

Tags

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