Electrocardiograph

1.

2.

Electric dipole is a pair of equal by value and
opposite by sign electric charges centers of which are
situated not far from each other.
P l q
P Cos
k
2
r

3. ELECTRIC FIELD

Electric field is a kind of matter by means of which the charged objects
interact with each other.

4.

5.

ECG

6.

HISTORY OF BIOPOTENTIALS
REVELATION. EINTHOVEN’S THEORY.
Willem
Einthoven
Dutch
physiologist.
Nobel prize
winner
(1924).

7.

HISTORY OF BIOPOTENTIALS
REVELATION.

8. ELECTROCARDIOGRAPH

Electrocardiogram
(ECG) – the graphic
record
of
electric
potential
difference
produced by the heart.

9. Normal ECG

10.

11. ECG Standard leads

Standard bipolar leads:
1 – right hand-left hand;
2 – right hand-left leg;
3 – left hand left leg.

12.

13.

14. Einthoven’s Triangle

15. Cardiomyocyte potential & ECG

16. Heart Electrical Axis

17.

18. Holter

– ambulatory monitor of ECG &
blood pressure. It collects & analyses
information during the day in order to find
possible abnormalities.
24 hours ECG monitoring