A first degree AV block means that the node works slowly but each impulse gets through eventually. There will be a long PR interval (>200 msec or 5 small squares at standard settings).
See also: AV Blocks
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- Hampton, J and Hampton, J (2019) - The ECG Made Easy, 9th edn, Elsevier
- Houghton, AR and Gray, D (2014) - Making Sense of the ECG: A Hands-on Guide, 4th edn, Taylor and Francis
- Alila Medical Media (2018) - How to Read ECG/EKG, Part 2, Animation, (Accessed: 30/06/2019)
- Alila Medical Media (2016) - Atrioventricular Block (AV block) - Types of Heart Block Part 2, Animation., (Accessed: 30/06/2019)
- Alila Medical Media (2016) - ECG Interpretation Basics, Animation., (Accessed: 30/06/2019)
- Alila Medical Media (2016) - Heart Blocks, Anatomy and ECG Reading, Animation., (Accessed: 30/06/2019)
- Alila Medical Media (2016) - Types of Heart Blocks, Narrated Animation Part 1, (Accessed: 30/06/2019)
- Anna Pickens (2013) - AV block: "EM in 5", (Accessed: 11/08/2019)
- Anneliese Garrison (2012) - EKG strips for the NCLEX & beginners, (Accessed: 30/06/2019)