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ECG2.pptx
- 1. ECG BASICS SPEAKER: Dr M Rama Bhupal Reddy MD (Anaesthesia) DrNB (CCM)
- 2. ECG/EKG • It is the procedure of recording the electrical activity of the heart • Electrocardiograph is the machine • Electrocardiogram is the record
- 3. • The ECG is not only the oldest but, in fact, over 100 years after its introduction, continues as the most commonly used cardiovascular laboratory procedure.
- 6. Standard 12-Lead EKG • Six limb leads –Leads I, II, III, aVR, aVL, aVF • Six chest leads (precordial leads) –V1, V2, V3, V4, V5, V6 • Information from 12 leads obtained from the attachment of only 10 electrodes.
- 7. Precordial Chest Leads For every person, each precordial lead placed in the same relative position V1 - 4th intercostal space, R of sternum V2 - 4th intercostal space, L of sternum V4 - 5th intercostal space, midclavicular V3 - between V2 and V4, on 5th rib V5 - 5th intercostal space, anterior axillary line V6 - 5th intercostal space, mid-axillary line
- 8. • Precordial leads 2nd ICS 1st ICS 3rd ICS
- 9. View The Leads Provide • II, III, aVF – view inferior wall of heart • V1 and V2 – view septal wall of heart • V3 and V4 – view anterior wall of heart • I, aVL, V5, V6 – view lateral wall of heart
- 10. Lateral View – I, aVL, V5, V6 I aVL V5 V6
- 11. Inferior View – II, III, aVF II III aVF
- 12. Septal View – V1 & V2 V1 V2
- 13. Anterior View – V3 & V4 V4 V3
- 14. Basic 12-Lead EKG Format Lead I Lateral wall aVR not evaluated V1 Septum V4 Anterior wall Lead II Inferior wall aVL Lateral wall V2 Septum V5 Lateral wall Lead III Inferior wall aVF Inferior wall V3 Anterior V6 Lateral wall
- 15. Waves P Q R S T
- 18. Electrocardiogram waves • P-wave – depolarization of atria – Atria begin contracting about 25msec after the start of the p-wave • QRS-complex – ventricular depolarization – Ventricles begin contracting shortly after the peak of the R wave • T-wave – ventricular repolarization
- 19. ECG Interpretation 1) Rate 2) Rhythm 3) Axis 4) P wave 5) PR Interval 6) QRS Complex 7) ST Segment and T wave
- 23. SINUS RHYTHM
- 24. RHYTHM