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Our objective was to analyze the effect of the position of the dispersive patch (DP) on lesion size using computer modeling during epicardial approach. We compared the posterior position (patient's back), commonly used in clinical practice, to the anterior position (patient's chest). The model considered ventricular wall thicknesses between 4 and 8\u2009mm, and electrode insertion depths between .3 and .7\u2009mm. RF pulses were simulated with 20\u2009W of power for 30\u2009s duration. Statistically significant differences (<jats:italic>P<\/jats:italic>\u2009&lt;\u2009.001) were found between both DP positions in terms of baseline impedance, RF current (at 15\u2009s) and thermal lesion size. The anterior position involved lower impedance (130.8\u2009\u00b1\u20094.7 vs. 146.2\u2009\u00b1\u20094.9\u2009\u03a9) and a higher current (401.5\u2009\u00b1\u20095.6 vs. 377.5\u2009\u00b1\u20095.1\u2009mA). The anterior position created lesion sizes larger than the posterior position: 8.9\u2009\u00b1\u20090.4 vs. 8.4\u2009\u00b1\u20090.4\u2009mm in maximum width, 8.6\u2009\u00b1\u20090.4 vs. 8.1\u2009\u00b1\u20090.4\u2009mm in surface width, and 4.5\u2009\u00b1\u20090.4 vs. 4.3\u2009\u00b1\u20090.4\u2009mm in depth. Our results suggest that: (1) the redirection of the RF currents due to repositioning the PD has little impact on lesion size and only affects baseline impedance, and (2) the differences in lesion size are only 0.5\u2009mm wider and 0.2\u2009mm deeper for the anterior position, which does not seem to have a clinical impact in the context of VT ablation.<\/jats:p>","DOI":"10.1002\/cnm.3847","type":"journal-article","created":{"date-parts":[[2024,7,10]],"date-time":"2024-07-10T05:21:01Z","timestamp":1720588861000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Effect of dispersive electrode position (anterior vs. posterior) in epicardial radiofrequency ablation of ventricular wall: A computer simulation study"],"prefix":"10.1002","volume":"40","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-6455-3574","authenticated-orcid":false,"given":"Ramiro M.","family":"Irastorza","sequence":"first","affiliation":[{"name":"Instituto de F\u00edsica de L\u00edquidos y Sistemas Biol\u00f3gicos (CONICET)  La Plata Argentina"},{"name":"Facultad Regional La Plata, Departamento de Ingenier\u00eda Mec\u00e1nica Universidad Tecnol\u00f3gica Nacional  La Plata Argentina"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4128-4367","authenticated-orcid":false,"given":"Claudio","family":"Hadid","sequence":"additional","affiliation":[{"name":"Secci\u00f3n Electrofisiolog\u00eda, Arritmias y Marcapasos, Servicio de Cardiolog\u00eda Hospital General de Agudos Dr. Cosme Argerich  Buenos Aires Argentina"},{"name":"Hospital Universitario CEMIC  Buenos Aires Argentina"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3247-2665","authenticated-orcid":false,"given":"Enrique","family":"Berjano","sequence":"additional","affiliation":[{"name":"Department of Electronic Engineering, BioMIT Universitat Polit\u00e8cnica de Val\u00e8ncia  Valencia Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2024,7,9]]},"reference":[{"key":"e_1_2_11_2_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1540\u20108167.1998.tb00907.x"},{"key":"e_1_2_11_3_1","doi-asserted-by":"publisher","DOI":"10.1016\/s0735\u20101097(00)00606\u20109"},{"key":"e_1_2_11_4_1","doi-asserted-by":"publisher","DOI":"10.1016\/s0735\u20101097(03)00398\u2010x"},{"key":"e_1_2_11_5_1","doi-asserted-by":"publisher","DOI":"10.1161\/01.CIR.0000128039.87485.0B"},{"key":"e_1_2_11_6_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.hrthm.2016.05.008"},{"key":"e_1_2_11_7_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.hlc.2018.10.007"},{"key":"e_1_2_11_8_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jacep.2019.09.015"},{"key":"e_1_2_11_9_1","doi-asserted-by":"publisher","DOI":"10.1007\/s10840\u2010020\u201000915\u20107"},{"key":"e_1_2_11_10_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ccep.2020.05.006"},{"key":"e_1_2_11_11_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ccep.2020.05.003"},{"key":"e_1_2_11_12_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ccep.2020.05.004"},{"key":"e_1_2_11_13_1","doi-asserted-by":"publisher","DOI":"10.1253\/circj.cj\u201011\u20100984"},{"issue":"3","key":"e_1_2_11_14_1","first-page":"iii264","article-title":"Anterior position of dispersive patch for esophageal protection during atrial fibrillation ablation. 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