AV block ecg analysis
- 1. Atrio-Ventricular Block ECG Analysis Shubhendu Sharma 1
- 2. AV Block Partial delays or complete interruptions in the cardiac conduction pathway between the atria and ventricles The degree of block defines the type and classification of heart block 2
- 3. AV Block Common causes: ◦ Ischemia ◦ Myocardial necrosis ◦ Degenerative disease of the conduction system ◦ Congenital anomalies ◦ Drugs (especially digitalis preparations) 3
- 4. AV Block 1st-degree AV heart block 2nd-degree AV heart block, Mobitz type I (Wenckebach) 2nd-degree AV heart block, Mobitz type II 3rd-degree AV heart block 4
- 5. AV Block 5
- 6. 1st-degree AV heart block Not a true block Is a consistent delay of conduction at the level of the AV node 6
- 7. 1st-degree AV heart block 7
- 8. 1st-degree AV heart block ECG description 8
- 9. 2nd-Degree AV Heart Block, Mobitz Type I Intermitt ent block at the level of the AV node Also referred to as Wencke bach 12
- 10. 2nd-Degree AV Heart Block, Mobitz Type I More P waves than QRS complexes and the rhythm has patterned irregularity PR interval increases until a QRS complex is dropped After dropped beat the next PR interval is shorter As each subsequent impulse generated there is a progressively longer PR interval until again, a QRS is dropped 13
- 11. 2nd-Degree AV Heart Block, Mobitz Type I 14
- 12. 2nd-Degree AV Heart Block, Mobitz Type II Intermitten t block at the level of the bundle of His or bundle branches resulting in atrial impulses that are not conducted to the 16
- 13. 2nd-Degree AV Heart Block, Mobitz Type II 17
- 14. 3rd-Degree AV Heart Block Complete block of conduction at or below the AV node Impulses from atria cannot reach ventricles 18
- 15. 3rd-Degree AV Heart Block 19
- 16. 3rd-Degree AV Heart Block 20
- 17. Differences Between AV Heart Blocks 21
- 18. Practice makes ECG Easy Determine the type of dysrhythmia 22
- 19. Practice makes ECG Easy Determine the type of dysrhythmia 23
- 20. Practice makes ECG Easy Determine the type of dysrhythmia 24
- 21. Practice makes ECG Easy Determine the type of dysrhythmia 25
- 22. Practice makes ECG Easy Determine the type of dysrhythmia 26
- 23. Practice makes ECG Easy Determine the type of dysrhythmia 27
- 24. Practice makes ECG Easy Determine the type of dysrhythmia 28
- 25. Practice makes ECG Easy Determine the type of dysrhythmia 29
- 26. Practice makes ECG Easy Determine the type of dysrhythmia 30
- 27. Practice makes ECG Easy Determine the type of dysrhythmia 31
- 28. Practice makes ECG Easy Determine the type of dysrhythmia 32
- 29. Practice makes ECG Easy Determine the type of dysrhythmia 33
- 30. Practice makes ECG Easy Determine the type of dysrhythmia 34
- 31. Practice makes ECG Easy Determine the type of dysrhythmia 35
- 32. Practice makes ECG Easy Determine the type of dysrhythmia 36
- 33. Practice makes ECG Easy Determine the type of dysrhythmia 37
- 34. Practice makes ECG Easy Determine the type of dysrhythmia 38
- 35. Practice makes ECG Easy Determine the type of dysrhythmia 39
- 36. Practice makes ECG Easy Determine the type of dysrhythmia 40
- 37. Practice makes ECG Easy Determine the type of dysrhythmia 41
- 38. Practice makes ECG Easy Determine the type of dysrhythmia 42
- 39. Practice makes ECG Easy Determine the type of dysrhythmia 43
- 40. Practice makes ECG Easy Determine the type of dysrhythmia 44
- 41. Practice makes ECG Easy Determine the type of dysrhythmia 45
- 42. Practice makes ECG Easy Determine the type of dysrhythmia 46
- 43. Practice makes ECG Easy Determine the type of dysrhythmia 47
- 44. Practice makes ECG Easy Determine the type of dysrhythmia 48
- 45. Practice makes ECG Easy Determine the type of dysrhythmia 49
- 46. Practice makes ECG Easy Determine the type of dysrhythmia 50
- 47. Practice makes ECG Easy Determine the type of dysrhythmia 51
- 48. Practice makes ECG Easy Determine the type of dysrhythmia 52
- 49. Practice makes ECG Easy Determine the type of dysrhythmia 53
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Editor's Notes
- #7: The normal PR interval is 0.12 to 0.20 seconds in duration.
- #8: The normal PR interval is 0.12 to 0.20 seconds in duration.
- #23: 3
- #24: 2.1
- #25: Mobitz 2
- #26: Severe 1 degree
- #27: Atrial rate 56 BPM, Ventricular rate 56 BPM, regular rhythm, P waves are upright and normal and each is followed by a QRS complex, QRS complexes are normal at 0.08 seconds in duration, PRI has a longer than normal duration 0.30 seconds, QT 0.40 seconds. Sinus bradycardia with 1st-degree AV heart block.
- #28: Answer: Atrial rate 60 BPM, Ventricular rate 50 BPM, patterned irregularity, normal and upright P waves but not all are followed by a QRS complex, normal QRS complexes at 0.08 seconds, PRI is progressively longer until a QRS complex is dropped and then the cycle starts over again, QT 0.40 seconds. 2nd-degree AV heart block, type I.
- #29: Answer: 50 BPM (ventricular) 84 BPM (atrial), regular rhythm, P waves are upright and normal but there are more P waves than QRS complexes, QRS complexes are bizarre-looking and wide at 0.20 seconds in duration, PRI is immeasurable (as the P waves are not associated with the QRS complexes), the P waves appear to march through the QRS complexes, QT 0.48 seconds. 3rd-degree AV heart block.
- #30: Answer: Atrial rate 58 BPM, Ventricular rate 60 BPM, regular rhythm, P waves are upright and normal and each is followed by a QRS complex, QRS complexes are normal at 0.12 seconds in duration, PRI has a longer than normal duration 0.30 seconds and constant, QT 0.40 seconds. Sinus bradycardia with 1st-degree AV heart block.
- #31: Answer: Atrial rate 94 BPM, Ventricular rate 48 BPM, regular rhythm, P waves are upright and normal but there are two P waves preceding each QRS (in other words, not all the P waves are followed by a QRS complex), QRS complexes are normal at 0.08 seconds in duration, PRI 0.16 seconds and is constant for the conducted beats, QT 0.36 seconds. 2nd-degree AV heart block, type II.
- #32: Answer: Atrial rate 75 BPM, Ventricular rate 36 BPM, regular rhythm, P waves are upright and normal but there are more P waves than QRS complexes, QRS complexes are bizarre-looking and wide at 0.16 seconds in duration, PRI is immeasurable (as the P waves are not associated with the QRS complexes), the P waves appear to march through the QRS complexes, QT 0.36 seconds. 3rd- degree AV heart block.
- #33: Answer: Atrial rate 45 BPM, Ventricular rate 45 BPM, regular rhythm, normal and upright P waves and each is followed by a QRS complex, QRS complexes at 0.08 seconds, PRI 0.44 seconds and constant, QT 0.48 seconds. Sinus bradycardia with 1st-degree AV heart block.
- #34: Answer: Atrial rate 94 BPM, Ventricular rate 48 BPM, regular rhythm, P waves are upright and normal but there are two P waves preceding each QRS (in other words, not all the P waves are followed by a QRS complex), QRS (more accurately described as RS) complexes are 0.08 seconds in duration, PRI 0.24 seconds and is constant for the conducted beats, QT 0.36 seconds. 2nd-degree AV heart block, type II (there is also a 1st degree AV block).
- #35: mobitz1
- #36: Answer: Atrial rate 115 BPM, Ventricular rate 42 BPM, regular rhythm, P waves are upright and normal but there are more P waves than QRS complexes, QRS complexes are normal at 0.12 seconds in duration, PRI is immeasurable (as the P waves are not associated with the QRS complexes), the P waves appear to march through the QRS complexes, QT 0.44 seconds. 3rd-degree AV heart block.
- #37: Av block 1 from mcq
- #38: 3
- #39: av2m2
- #40: Av m1 mcq
- #41: Mobitz 1
- #42: 3
- #43: 3
- #44: 2 2
- #45: 2 2
- #46: 2 1
- #47: 3
- #48: 1
- #49: Bbbbbb
- #50: Mobiz 2
- #51: 3
- #52: 2.1
- #53: 2.1
- #54: 2 1 new