What causes a 1st degree AV block?

Related questions

1. What does a segment on an ECG tracing indicate?
2. What does the PQ interval represent?
3. How serious is a first degree AV block?
4. What is PR value ad?
5. How do you treat first degree AV block?
6. What is the treatment for 1st degree AV block?
7. What is PR value?
8. How do you evaluate a PR campaign?
9. What happens in the PR segment?

Tags

1. #infarction
2. #degree
3. #first
4. #inferior
5. #myocarditis
6. #athletes
7. #acute
8. #nodal
9. #especially
10. #disturbances
11. #electrolyte
12. #causes
13. #enhanced
14. #block
15. #medication
16. #myocardial
17. #example
18. #heart
19. #common
20. #vagal
21. #disease