{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,1]],"date-time":"2026-03-01T00:42:44Z","timestamp":1772325764014,"version":"3.50.1"},"reference-count":34,"publisher":"MDPI AG","issue":"9","license":[{"start":{"date-parts":[[2015,9,17]],"date-time":"2015-09-17T00:00:00Z","timestamp":1442448000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Entropy"],"abstract":"<jats:p>A novel method of quantifying the effectiveness of the suppression of ventricular activity from electrocardiograms (ECGs) in atrial fibrillation is proposed. The temporal distribution of the energy of wavelet coefficients is quantified by wavelet entropy at each ventricular beat. More effective ventricular activity suppression yields increased entropies at scales dominated by the ventricular and atrial components of the ECG. Two studies are undertaken to demonstrate the efficacy of the method: first, using synthesised ECGs with controlled levels of residual ventricular activity, and second, using patient recordings with ventricular activity suppressed by an average beat template subtraction algorithm. In both cases wavelet entropy is shown to be a good measure of the effectiveness of ventricular beat suppression.<\/jats:p>","DOI":"10.3390\/e17096397","type":"journal-article","created":{"date-parts":[[2015,9,17]],"date-time":"2015-09-17T16:40:26Z","timestamp":1442508026000},"page":"6397-6411","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":9,"title":["Wavelet Entropy as a Measure of Ventricular Beat Suppression from the Electrocardiogram in Atrial Fibrillation"],"prefix":"10.3390","volume":"17","author":[{"given":"Philip","family":"Langley","sequence":"first","affiliation":[{"name":"School of Engineering, University of Hull, Hull, HU6 7RX, UK"}]}],"member":"1968","published-online":{"date-parts":[[2015,9,17]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"January, C.T., Wann, L.S., Alpert, J.S., Calkins, H., Cigarroa, J.E., Cleveland, J.C., Conti, J.B., Ellinor, P.T., Ezekowitz, M.D., and Field, M.E (2014). 2014 AHA\/ACC\/HRS guideline for the management of patients with atrial fibrillation: A report of the American College of cardiology\/American heart association task force on practice guidelines and the heart rhythm society. 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