View source for Electrical axis

[[en:Electrical axis]]
[[ru:Электрическая ось сердца]]
Electrical axis of the heart is a term used in cardiology and functional diagnostics, reflecting the electrical processes taking place in the heart.
<p style="text-align:left;"> The direction of the electric axis of the heart shows the total value of the bioelectric changes that occur in the cardiac muscle with each contraction. The heart is a three-dimensional organ, and in order to calculate the direction of electric axis, cardiologists represent the thorax in the form of a coordinate system.</p>
<p style="text-align:left;"> Each electrode, when electrical axis is recorded, detects bioelectric excitation occurring in a specific part of the myocardium. If you project the electrodes onto a conditional coordinate system, you can calculate the angle of the electric axis, which will be located where the electrical processes are the strongest.</p>
<p style="text-align:left;"> Electrical axis is indicated as the alpha angle. It can have a normal, horizontal or vertical position. Moreover, in a lean person, the axis of the heart is more vertical relative to the average values, while in an over-weight person the axis is more horizontal. The electric axis of the heart can deviate under various pathological conditions. For example, a conduction disorder (block) can shift it to the right or to the left.</p>

[[File:Electrical_axis.jpg|center|]]

<p style="text-align:left;">The values of electric axis in degrees from -180 to 180:</p>
* From -180 to -90 - Extreme axis deviation 
* From -90 to -45 - Moderate left axis deviation
* From -45 to -15 - Mild left axis deviation
* From -15 to 15 - Horizontal axis position 
* From 15 to 85 - Normal axis position 
* From 85 to 105 - Vertical axis position 
* From 105 to 180 - Right axis deviation

You can find out your electrical axis of the heart at home using the ECG Dongle [https://cardio-cloud.ru/].