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==Lead reversals== | ==Lead reversals== | ||
[[Image:cableReversal1.png|thumb]] | [[Image:cableReversal1.png|thumb|Right arm lef arm lead reversal can be distinguished from the (much rarer) dextrocardia by looking at the p-wave.]] | ||
[[Image:cableReversal2.png|thumb]] | [[Image:cableReversal2.png|thumb]] | ||
Sometimes an ECG is made properly. Mistakes do happen and leads can be switched. Always remain careful to check this or you might come to the wrong conclusions. One of the most common mistakes is to switch the right and left arm. This will result in negative complexes in I, indicating a right axis deviation! | Sometimes an ECG is made properly. Mistakes do happen and leads can be switched. Always remain careful to check this or you might come to the wrong conclusions. One of the most common mistakes is to switch the right and left arm. This will result in negative complexes in I, indicating a right axis deviation! | ||