Theoretical Basis of the EKG
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          The Mean Electrical Axis
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          Determining Axis 2
          Determining Axis 3
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Theoretical Basis of the EKG

An electrical current in the direction towards the positive end of a bipolar electrode causes a positive deflection of the stylus of the EKG.

If the number of myocardial cells (dipoles) in this direction increases, the current will increase as well.

The greater the current, the more positive the voltage.
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An electrical current in the direction away from the positive end of a bipolar electrode causes a negative deflection of the stylus of the EKG.

If the number of myocardial cells (dipoles) in this direction increases, the current will increase as well.

The greater the current, the more negative the voltage.

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