12-Lead EKG Interpretation for the Primary Care Provider

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1 21 st Annual Southwestern Regional Nurse Practitioner Symposium July 26, Lead EKG Interpretation for the Primary Care Provider Fran Stier MSN, ANP-BC, ACNP-BC Heart Health Care LLC Show Low, AZ (Part 3 of 3 parts)

2 12-Lead EKG Interpretation for the Primary Care Provider, Fran Stier, ANP

3 12-Lead EKG Interpretation for the Primary Care Provider, Fran Stier, ANP

4 12-Lead EKG Interpretation for the Primary Care Provider, Fran Stier, ANP

5 12-Lead EKG Interpretation for the Primary Care Provider, Fran Stier, ANP

6 12-Lead EKG Interpretation for the Primary Care Provider, Fran Stier, ANP

7 Antiarrhythmic Agents 12-Lead EKG Interpretation for the Primary Care Provider, Fran Stier, ANP

8 12-Lead EKG Interpretation for the Primary Care Provider, Fran Stier, ANP

9 CAST ( ) Encanide (Enkaid) Flecainide (Tambocor) Moricizine (Ethmozine) 12-Lead EKG Interpretation for the Primary Care Provider, Fran Stier, ANP

10 Class IA Phase 0: slow conduction by blocking sodium flow. Use: Supraventricular or ventricular Proarrhythmic: Moderately High ECG: Prolong QRS & QT intervals Agents: quindine, norpace, procainamide 12-Lead EKG Interpretation for the Primary Care Provider, Fran Stier, ANP

11 Class IB Agents: lidocaine, mexiletine, tocainide, dilantin. Use: ventricular arrhythmias. Proarrhythmic: relatively low. ECG: no effect on AV, does not widen QRS 12-Lead EKG Interpretation for the Primary Care Provider, Fran Stier, ANP

12 Class IC Agents: flecainaide, propafenone (Rythmol) Use: Supraventricular. Rythmol for both supraventricular & ventricular. Proarrhythmic: High ECG: Prolong PR, QRS, & QT. 12-Lead EKG Interpretation for the Primary Care Provider, Fran Stier, ANP

13 Class II Phase 4: decrease conduction thru AV node & dec. myocardial automaticity. Agents: Beta Blockers Use: Supraventricular & ventricular. ECG: Bradycardia, prolong PR. 12-Lead EKG Interpretation for the Primary Care Provider, Fran Stier, ANP

14 Class III Phase 3: Potassium channel blocker, prolongs relative refractory, causes coronary vasodilatation. Agents: Amiodarone, Sotalol, Dofetilide-pure Class III, no BB activity Use: primarily ventricular, but also atrial fibrillation & flutter. ECG: Amiodarone - prolongs PR & QT, prominent U wave. Sotalol - prolongs PR & QT, torsades de pointes. Dofetilide prolongs QT, may cause polmorphoric VT. 12-Lead EKG Interpretation for the Primary Care Provider, Fran Stier, ANP

15 Class IV Phase I & IV: depress automaticity SA node, slows AV conduction. Agents: Verapamil, Diltiazem Use: Supraventricular arrhythmias Proarrhythmic: relatively low ECG: Decrease SR, prolong PR Contraindications: wide QRS tachycardia, WPW. 12-Lead EKG Interpretation for the Primary Care Provider, Fran Stier, ANP

16 Unclassified Agent: Adenosine ( Adenocard) Use: PSVT, SVT Proarrhythmic: moderate ECG: Transient inc. PR interval: 1st, 2nd, & 3rd degree heart block. Asystole. Note: bradycardia refractory to atropine. 12-Lead EKG Interpretation for the Primary Care Provider, Fran Stier, ANP

17 Antiarrhythmics: Nursing Implications Monitor for Proarrhythmia Assess patient symptoms. Observe ECG changes. 12-Lead EKG Interpretation for the Primary Care Provider, Fran Stier, ANP

18 Electrolyte Effects on EKG Agents that Prolong QT 12-Lead EKG Interpretation for the Primary Care Provider, Fran Stier, ANP

19 Drug-Induced QT Prolongation 12-Lead EKG Interpretation for the Primary Care Provider, Fran Stier, ANP

20 Normal QTi:.40 sec +.04 sec Heart rate 60 < 100: QTi is < ½ R-R interval QTc = QT R-R 12-Lead EKG Interpretation for the Primary Care Provider, Fran Stier, ANP

21 12-Lead EKG Interpretation for the Primary Care Provider, Fran Stier, ANP

22 Prolong QT Resources Lead EKG Interpretation for the Primary Care Provider, Fran Stier, ANP

23 EKG changes Hyperkalemia Peaking of T wave P waves flatten PR prolongs Widening of QRS: looks like RBBB w/lah ST disappears into T wave VF or standstill may occur 12-Lead EKG Interpretation for the Primary Care Provider, Fran Stier, ANP

24 EKG Effects Hypokalemia Flatten T wave Prominent U wave Prolong PR: 1 st degree Block Wenckebach Slight ST depression Dig Toxicity 12-Lead EKG Interpretation for the Primary Care Provider, Fran Stier, ANP

25 12-Lead EKG Interpretation for the Primary Care Provider, Fran Stier, ANP

26 Maintains intracellular Potassium Na/K/ATPase pump Intracellular enzymes Glucose metabolism Protein synthesis Neuromuscular sedative Magnesium 12-Lead EKG Interpretation for the Primary Care Provider, Fran Stier, ANP

27 Peaked T waves Prominent U wave Prolong QRS ST depression QU prolongation EKG Changes Hypomagnesemia 12-Lead EKG Interpretation for the Primary Care Provider, Fran Stier, ANP

28 Indications for Mg ++ Replacement Ventricular arrhythmias Torsades Contraindicated in Heart Block 1-2 gms IV, <1.5ml/min Watch for toxicity: hypotension, drowsiness, weakness, dec. DTRs 12-Lead EKG Interpretation for the Primary Care Provider, Fran Stier, ANP

29 EKG Changes Hypocalcemia Elongates QT prolong QT Symmetrical T wave 12-Lead EKG Interpretation for the Primary Care Provider, Fran Stier, ANP

30 EKG Changes Hypercalcemia Shortens QT interval T wave prolongs Increase sensitivity to digitalis 12-Lead EKG Interpretation for the Primary Care Provider, Fran Stier, ANP

31 12-Lead EKG Interpretation for the Primary Care Provider, Fran Stier, ANP

32 EKG Samples 12-Lead EKG Interpretation for the Primary Care Provider, Fran Stier, ANP

33 12-Lead EKG Interpretation for the Primary Care Provider, Fran Stier, ANP

34 12-Lead EKG Interpretation for the Primary Care Provider, Fran Stier, ANP

35 12-Lead EKG Interpretation for the Primary Care Provider, Fran Stier, ANP

36 12-Lead EKG Interpretation for the Primary Care Provider, Fran Stier, ANP

37 12-Lead EKG Interpretation for the Primary Care Provider, Fran Stier, ANP

38 12-Lead EKG Interpretation for the Primary Care Provider, Fran Stier, ANP

39 12-Lead EKG Interpretation for the Primary Care Provider, Fran Stier, ANP

40 12-Lead EKG Interpretation for the Primary Care Provider, Fran Stier, ANP

41 12-Lead EKG Interpretation for the Primary Care Provider, Fran Stier, ANP

42 12-Lead EKG Interpretation for the Primary Care Provider, Fran Stier, ANP

43 12-Lead EKG Interpretation for the Primary Care Provider, Fran Stier, ANP

44 12-Lead EKG Interpretation for the Primary Care Provider, Fran Stier, ANP

45 12-Lead EKG Interpretation for the Primary Care Provider, Fran Stier, ANP

46 12-Lead EKG Interpretation for the Primary Care Provider, Fran Stier, ANP

47 12-Lead EKG Interpretation for the Primary Care Provider, Fran Stier, ANP

48 12-Lead EKG Interpretation for the Primary Care Provider, Fran Stier, ANP

49 Questions??? 12-Lead EKG Interpretation for the Primary Care Provider, Fran Stier, ANP

50 Thank you

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