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Some technical aspects in the ECG recording, although basic, are not well enough known. In this short communication we present two examples in which the low-pass filter attenuates or eliminates electrocardiographic signals which are important from the clinical point of view.
In addition to knowledge of normal and pathological patterns, the correct interpretation of electrocardiographic (ECG) recordings requires the use of acquisition procedures according to approved standards. Most manuals on standard electrocardiography devote little attention to inadequate ECG recordings. In this article, we present the most frequent ECG… (More)
In many cases, failure to perform an electrocardiogram according to established standards can lead to incorrect diagnosis. When this error involves a disease that can result in sudden death such as Brugada syndrome, diagnostic procedures are not without risk for the patient. A 20 year-old man visited his family doctor for atypical chest pain some time… (More)