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. 1979 Aug;42(2):117–123. doi: 10.1136/hrt.42.2.117

Low voltage electrical activity preceding right atrial depolarisation in man.

A F Mackintosh, M J English, R Vincent, D J Woollons, D A Chamberlain
PMCID: PMC482123  PMID: 486271

Abstract

Electrical recordings were made in the high right atrium in 28 patients undergoing cardiac catheterisation and in 3 healthy volunteers. After filtering and amplification by 3 to 10 million times, the signals were passed through a signal averaging process in a digital computer. Of the 28 subjects who had technically satisfactory recordings, 23 showed low voltage electrical activity preceding the conventionally-recorded atrial depolarisation. The low voltage activity started 50 to 200 ms before the atrial deflection and was variable in shape. These early signals may be the result of activity in the region of the sinus node.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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