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QRS axis: Difference between revisions
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[[Image:hartas2.jpg|thumb|The heartaxis indicates the average direction of the depolarization wave. A normal heartaxis, the picture shows an example, is between -30 and +90 degrees. In this example, the heartaxis is +45 degrees.]] | [[Image:hartas2.jpg|thumb|The heartaxis indicates the average direction of the depolarization wave. A normal heartaxis, the picture shows an example, is between -30 and +90 degrees. In this example, the heartaxis is +45 degrees.]] | ||
[[Image:einthhartas.png|thumb|Heartaxis from the original publication of Einthoven. Reprinted from The Lancet, March 30 1912, Einthoven W., | [[Image:einthhartas.png|thumb|Heartaxis from the original publication of Einthoven. Reprinted from The Lancet, March 30 1912, Einthoven W., | ||
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For a lot of people, this is a difficult concept. The theoretic part seems difficult but by doing it a lot, it will become clear. | For a lot of people, this is a difficult concept. The theoretic part seems difficult but by doing it a lot, it will become clear. | ||
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==The heartaxis simulator== | |||
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|<flashow>http://nl.ecgpedia.org/images/c/cc/Heartaxis.swf|height=350px|width=700px|</flashow> | |||
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| The heartaxis simulator, made by Bart Duineveld. Turn the heart-axis arrow and see how the QRS complexes change. [[media:Heartaxis.swf|Link to the original filel]] for use in powerpoint presentations or full screen viewing. | |||
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==How do you determine the electrical heartaxis== | ==How do you determine the electrical heartaxis== | ||
[[Image:hart_axis.png|thumb]] | [[Image:hart_axis.png|thumb]] | ||