2.  Electrocardiogram
(EKG) is the test of heart
that shows the electric activity of it .
 It’s performed by putting electrodes on the
chest to detect the activity .
 The voltage pulse can be recorded by an
instrument called Electrocardiograph (ECG).
 To
understand what does EKG tell as , we
should know the basics of Heart Electrical
Activity .

3. •The heart is consisted of four champers (two
atria and two ventricles) .
•The right atrium contains specialized cells
called Sinoatrial node or ‘pace maker’ which
initiates the heart beat .

4. • The first beat – generated by SA node –
spreads through right and left atria and
causes them to contract .

5.  The
pulse that passes through muscle cells is
called Depolarization Wave .
 Depolarization
removes the normal electrical
distribution of each cell .
 When this wave passes the cell it recovers
the resting-state ‘ + out , - in ’