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1. 1
The Heart
The Normal Electrocardiogram

2. 2
The Normal Electrocardiogram
•When the cardiac impulse passes through
the heart, it also spreads all the way to the
surface of the body.
•If electrodes are placed on the skin,
electrical impulses generated can be
recorded.
This recording is known as an
Electrocardiogram

3. 3
The Normal ECG / EKG

4. 4
Recording Of Depolarization &
Repolarization Waves

5. 5
Correlation Of Action Potential
With EKG

6. 6
The Normal ECG / EKG
PR / PQ interval:-
From the beginning
of the P to the
beginning of Q / R
QT interval:-From
the beginning of the
Q to the endof T

7. 7
The Normal ECG / EKG

8. 8
Recordings From A Partially
Depolarized Myocardium

9. 9
Flow Of Currents On The Chest

10. 10
Bipolar Limb Leads

11. 11
Recording From Bipolar Limb
Leads
Einthoven’s Law :-
Lead I + Lead III = Lead II

12. 12
Precordial (Chest) Leads

13. 13
Recordings From Precordial
Chest Leads

14. 14
Connections For aVR

15. 15
Connections for aVL

16. 16
Connections For aVF

17. 17
Recordings From Augmented
Unipolar Limb Leads