Abstract
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Highlights
For correct electrocardiography (ECG) diagnosis and interpretation, it is important to distinguish normal from pathological electrocardiograms, and to ensure that they have been properly recorded
If 300 million ECGs are performed annually in the world, 6 million are erroneously recorded. This figure could even triple if one includes other frequent mistakes, such as vertical displacement of precordial electrodes and the distal placement of these on the limbs instead of the trunk.[2]
Few manuals on electrocardiography have devoted space to warn about the effects of ECG recordings that do not conform to standards, but it seems that this is changing.[3] sometimes alert us to this error.[7]
Summary
For correct electrocardiography (ECG) diagnosis and interpretation, it is important to distinguish normal from pathological electrocardiograms, and to ensure that they have been properly recorded. Can limb electrodes be placed on the trunk? In a patient with necrotic Q wave in leads II, III and aVF, placing limb electrodes on the trunk may reduce both the voltage and the duration of the
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