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Heart Blocks ECG 19 Heart Blocks ECG 20 Heart Blocks ECG 21 Heart Blocks ECG 22 Heart Blocks ECG 23 Heart Blocks ECG 24 Heart Blocks ECG 25 Heart Blocks ECG 26 Heart Blocks ECG 27 Heart Blocks ECG 28 Heart Blocks ECG 29 Heart Blocks ECG 30 Heart Blocks ECG 31 Heart Blocks ECG 32 Heart Blocks ECG 33 Heart Blocks ECG 34 Heart Blocks ECG 35 Heart Blocks ECG 36 Heart Blocks ECG 37 Heart Blocks ECG 38 Heart Blocks ECG 39 Heart Blocks ECG 40 Heart Blocks ECG 41 Heart Blocks ECG 42 Heart Blocks ECG 43 Heart Blocks ECG 44 Heart Blocks ECG 45 Heart Blocks ECG 46 Infarcts and Ischemia ECG 1 Infarcts and Ischemia ECG 2 Infarcts and Ischemia ECG 3 Infarcts and Ischemia ECG 4 Infarcts and Ischemia ECG 5 Infarcts and Ischemia ECG 6 Infarcts and Ischemia ECG 7 Infarcts and Ischemia ECG 8 Infarcts and Ischemia ECG 9 Infarcts and Ischemia ECG 10 Infarcts and Ischemia ECG 11 Infarcts and Ischemia ECG 12 Infarcts and Ischemia ECG 13 Infarcts and Ischemia ECG 14 Infarcts and Ischemia ECG 15 Infarcts and Ischemia ECG 16 Infarcts and Ischemia ECG 17 Infarcts and Ischemia ECG 18 Infarcts and Ischemia ECG 19 Infarcts and Ischemia ECG 20 Infarcts and Ischemia ECG 21 Infarcts and Ischemia ECG 22 Infarcts and Ischemia ECG 23 Infarcts and Ischemia ECG 24 Infarcts and Ischemia ECG 25 Infarcts and Ischemia ECG 26 Infarcts and Ischemia ECG 27 Infarcts and Ischemia ECG 28 Miscellaneous ECG 2 Miscellaneous ECG 3 Miscellaneous ECG 4 Miscellaneous ECG 5 Miscellaneous ECG 6 Miscellaneous ECG 7 Miscellaneous ECG 8 Miscellaneous ECG 9 Miscellaneous ECG 10 Miscellaneous ECG 11 Miscellaneous ECG 12 Miscellaneous ECG 13 Miscellaneous ECG 14 Miscellaneous ECG 15 Miscellaneous ECG 16 Miscellaneous ECG 17 Miscellaneous ECG 18 Miscellaneous ECG 19 Miscellaneous ECG 20 Miscellaneous ECG 21 Miscellaneous ECG 22 Miscellaneous ECG 23 Miscellaneous ECG 24 Miscellaneous ECG 25 Miscellaneous ECG 26 Miscellaneous ECG 27 Miscellaneous ECG 28 Miscellaneous ECG 29 Miscellaneous ECG 30 Miscellaneous ECG 31 Miscellaneous 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Heart Blocks ECG 13
- Normal sinus rhythm
- Two to one AV nodal block (2:1 AV nodal block)
- Right bundle branch block
2:1 AV block is a form of second degree AV nodal block and occurs when every other P wave is not conducted through the AV node to get to the ventricles and thus every other P wave is NOT followed by a QRS complex. Below is an image from a different ECG demonstrating 2:1 AV nodal block:
2:1 AV block can possibly be from either second degree type I AV nodal block (Wenckebach) or second degree type II AV nodal block. This distinction is crucial since the former is usually benign while the later requires implantation of a permanent pacemaker. Click the 2:1 AV Nodal Block Review button below for more details on how to make this distinction.
Related Topic Reviews: 2:1 AV Block ECG Review, Right Bundle Branch Block