1. Normal EKG – P wave: Atrial depolarization – PR interval: < 0.20 sec – QRS complex: ventricular depolarization – QRS interval < 0.10 sec SA 0.10 – 0.12 supraventricular > 0.12 sec ventricular

2. Sinus Bradycardia

3. Pathophysiology: none. It’s a sign of something else. Criteria: – Rate > 100 bpm – Rhythm: sinus – PR: < 0.20 – QRS: normal Fever, exercise, hypovolemia, adrenergic stimulation. Sinus tachycardia

4. Sinus Tachycardia

5. Sinus Arrhythmia

6. Pathophysiology: Atrial impulses faster that SA. Reentry pathway Criteria: – Rate: depends on atrial conduction – Rhythm: irregularly irregular – PR: cant diagnose. No P waves – QRS: narrow CAD, CHF, vavular disease, hypoxia, drugs Atrial Fibrillation/Flutter

7. Atrial Fibrillation

8. Atrial Flutter

9. Pathophysiology: Reentry Criteria: – Rate: > 150 bpm – Rhythm: regular – PR interval: cant see P waves – QRS: Narrow. Accessory conduction pathway, CAD, COPD, CHF PSVT

10. Paroxysmal Supraventricular Tach

11. Multifocal Atrial Tach Pathophysiology: Increased areas of automaticity. Criteria: – Rate: greater than 120 bpm – Rhythm: irregular – PR: variable (3 or more P waves) – QRS: narrow COPD

12. Multifocal Atrial Tachycardia

13. 1 st degree block Pathophysiology: slowed conduction Criteria – Rate: slow < 60 bpm – Rhythm: regular – PR: > 0.20 second – QRS: narrow Drugs (av nodal blockers, β-blockers, Ca +2 channel blockers, inferior MI.

14. 1 st degree heart block

15. 2 nd degree block I Pathophysiology: AV node Criteria – Rate: Regular or < 60 bpm – Rhythm: Regular with pause – PR: Progressive lengthing – QRS: narrow (until dropped) Drugs, parasympathetic tone, RCA

16. 2 nd degree type I - mobitz 1 - wenckebach

17. 2 nd degree block II Pathophysiology: Below the AV node Criteria – Rate: Different between atrial and ventricular – Rhythm: Atrial – regular, vent – irregular – PR: normal – QRS: narrow (dropped beat) ACS (LCA)

18. 2 nd degree heart block type II – mobitz 2

19. 3 rd degree block Pathophysiology: no impulses from Atria Criteria – Rate: Atrial – 60, ventricular – 40 – Rhythm: regular – PR: none – QRS: narrow or wide ACS (LCA)

20. 3 rd degree heart block – complete heart block

21. Premature Ventricular Contraction - PVC

22. Multi focal PVC

23. Bigeminy

24. Couplets and Triplets

25. R on T phenomenon

26. Ventricular Tachycardia

27. Ventriucular Fibrillation

28. Asystole