Содержание
- 2. Learning Objectives Basics of EKG Establish Consistent Approach to Interpreting ECGs Rate, rhythm, axis, identifying ischemia
- 4. Basics of EKG: Einthoven’s Triangle and Vectors +AVR +AVL +AVF Why is lead II often so
- 5. ECG Interpretation What is your approach to reading an ECG? Rate Rhythm Axis Hypertrophy Intervals P
- 6. Rate Square Counting: 300-150-100-75-60-50-42A Count QRS in 10 second rhythm strip x 6 ? use this
- 7. Rhythm Look at the rhythm strip below and answer the questions Are P waves present? yes
- 8. Axis Axis is the general flow of electricity as it passes through the heart ? Look
- 9. QRS Duration Normal QRS is Prolonged QRS duration (>120ms) is seen in bundle branch blocks (BBB).
- 10. Left and right bundle branch blocks Left BBB – Dominant S wave in V1 (‘W’-shaped) Broad,
- 11. QRS complex Poor R Wave Progression in V1 to V6: suggests prior anterior MI Pathologic Q
- 12. Hypertrophy RVH: V1 R/S ratio >1 OR V6 S/R ratio >1 LVH: 2 commonly used criteria
- 13. Intervals What is the normal PR interval? 0.12 to 0.20 s (3 - 5 small squares).
- 14. P Waves Left atrial enlargement (P mitrale) = wide, bifid P wave: >0.12s in lead II
- 15. ST segment and MI ST elevation may indicate STEMI if the following are met: At least
- 16. Evolution of an MI: Patterns on EKG
- 17. First thing you should do when looking for ischemia: Group leads by region!
- 18. EKG “Grouped Leads” correspond to area of injury
- 19. LET’S DO SOME PRACTICE CASES
- 20. Case #1 70 year old male with history of diabetes mellitus and hypertension occasionally feels lightheaded.
- 21. Case #1 ECG
- 22. Case #2 58 year old female with no significant past medical history presents with fatigue, lightheadedness
- 23. Case #2 ECG
- 24. Case #3 78 year old female with history of HTN, DM, HL, CAD admitted for syncope
- 25. Case #3 ECG
- 26. Case #4 67 year old male with history of diabetes, hypertension, COPD presents with chest pain.
- 27. Case #4 ECG
- 28. Case #5 60 year-old man with history of HTN, HL, CAD presents with nausea, shortness of
- 29. Case #5 ECG
- 30. Additional Resources Websites: http://en.ecgpedia.org/ http://ecg.utah.edu http://ecg.bidmc.harvard.edu/maven/ Apps: ECG Guide by QxMD (iPad and iPhone) ECG Interpret
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