Validation of an algorithm to reveal the U wave in atrial fibrillation View Full Text


Ontology type: schema:ScholarlyArticle      Open Access: True


Article Info

DATE

2018-12

AUTHORS

M. S. Al-Karadi, A. J. Wilkinson, J. Caldwell, P. Langley

ABSTRACT

Major cardiac organisations recommend U wave abnormalities should be reported during ECG interpretation. However, U waves cannot be measured in patients with atrial fibrillation (AF) due to the obscuring fibrillatory wave. The aim was to validate a U wave measurement algorithm for AF patients. Multi-beat averaging was applied to ECGs of 25 patients during paroxysms of AF and the presence of U waves compared to those from the same patients during sinus rhythm (SR). In a further database of 10 long-term AF recordings, the number of beats for effective U wave extraction by the algorithm was calculated. U waves were revealed in all AF recordings and there was no significant difference between the presence of U waves in AF and SR (p = 0.88). U wave amplitude was significantly increased in AF (mean (s.d.) amplitude 55 (39) AF vs 37 (28) μV SR, p = 0.005). The presence of U waves could easily be discerned when as few as 10 beats were used in the algorithm. The study demonstrates the validity of the algorithm to reveal U waves in AF recordings. The algorithm offers the potential to detect U wave abnormalities in patients with AF. More... »

PAGES

11946

Identifiers

URI

http://scigraph.springernature.com/pub.10.1038/s41598-018-30493-8

DOI

http://dx.doi.org/10.1038/s41598-018-30493-8

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1105993655

PUBMED

https://www.ncbi.nlm.nih.gov/pubmed/30093703


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