Basics: Difference between revisions

1 byte removed ,  31 August 2007
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The extremity leads are:
The extremity leads are:


*'''I''' from the right ot the left arm
*'''I''' from the right to the left arm
*'''II''' from the right arm to the left leg
*'''II''' from the right arm to the left leg
*'''III''' from the left arm to the left leg
*'''III''' from the left arm to the left leg
An easy rule to remember: lead '''I''' + lead '''III''' = lead '''II'''
An easy rule to remember: lead '''I''' + lead '''III''' = lead '''II'''
This is doen with the use of the height or depth, independent of the wave (QRS, P of T).
This is done with the use of the height or depth, independent of the wave (QRS, P of T).
Example: if in lead I, the QrS complex is 3 mm in height and in lead III 9mm, the height of the QRS-complex in lead II is 12mm.
Example: if in lead I, the QrS complex is 3 mm in height and in lead III 9mm, the height of the QRS-complex in lead II is 12mm.


Other exttremity leads are:
Other extremity leads are:


*'''AVL''' points to the left arm
*'''AVL''' points to the left arm
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