Ekg Review Practice Test.

EKG REVIEW PRACTICE TEST. 1. 1st degree AV block 2. 2nd degree AV block Type 1 (Wenckebach) 3. 2nd degree AV Block Type 2 4. 3rd degree AV block (complete heart block) 5. Normal sinus rhythm but PR interval is prolonged PR interval .20 seconds - conduction is delayed at AV node More P waves than QRS PR interval progressively increases in a cycle until P appears w/o QRS occasional dropped beat RR intervals not regular More P waves than QRS PR interval is *consistent and normal* multiple dropped beats QRS regular width More P waves than QRS; Sometimes the P waves are hidden within the T wave No pattern to PR interval, variable R-R always regular No atrial impulses are conducted through the AV node. Heart has regular atrial activity and regular ventricular activity, but the activities are not coordinated with each other. Ventricular tachy- Tachycardic rhythm cardia No P waves *Wide* QRS May or may not have a pulse (one of the four pulse-less rhythms) 6. Atrial flutter Regular rhythm and normal rate usually P waves are present, but there are *extra ones* Saw-tooth P waves QRS normal 7. Sinus Bradycar- dia 8. PVC (Premature Ventricular Con- traction) Bradycardic rate Regular rhythm P waves are present for each QRS. No dropped P waves R-R interval not regular (irregular rhythm) Absent P waves Wide QRS greater than 0.12 seconds; notched and bizarre 9. atrial fibrillation Irregularly irregular rhythm chaotic electrical activity No obvious P waves No PR interval QRS normal 10. Premature Atri- al Contractions (PAC) 11. Ventricular fibril- lation (V-fib) 12. Supraventricular tachycardia 13. Premature Junc- tional Contrac- tion (PJC) 14. normal sinus rhythm Regularly irregular