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Article

Cardiac Radiofrequency Ablation Simulation Using a 3D-Printed Bi-Atrial Thermochromic Model

1
Department of Surgical & Interventional Engineering, School of Biomedical Engineering & Imaging Sciences, King’s College London, St. Thomas Hospital, London SE1 7EH, UK
2
Centre for Cardiovascular Science, The University of Edinburgh, Edinburgh EH8 9YL, UK
*
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
These authors contributed equally to this work.
Appl. Sci. 2022, 12(13), 6553; https://doi.org/10.3390/app12136553
Submission received: 11 May 2022 / Revised: 23 June 2022 / Accepted: 27 June 2022 / Published: 28 June 2022

Abstract

Radiofrequency ablation (RFA) is a treatment used in the management of various arrhythmias including atrial fibrillation. Enhanced training for electrophysiologists through the use of physical simulators has a significant role in improving patient outcomes. The requirements for a high-fidelity simulator for cardiac RFA are challenging and not fully met by any research or commercial simulator at present. In this study, we have produced and evaluated a 3D-printed, bi-atrial model contained in a custom-made enclosure for RFA simulation using a new soft tissue-mimicking polymer, Layfomm-40, combined with thermochromic pigment and barium sulphate in an acrylic paint carrier. We evaluated the conductive properties of Layfomm-40, its sensitivity to RFA, and its visibility in X-ray imaging, and carried a full simulation of RFA in the cardiac catheterization laboratory by an electrophysiologist. We demonstrated that a patient-specific 3D-printed Layfomm-40 bi-atrial model coated with a custom thermochromic/barium sulphate paint was compatible with the CARTO3 electroanatomic mapping system and could be effectively imaged using X-ray fluoroscopy. We demonstrated the effective delivery and visualization of radiofrequency ablation lesions in this model. The simulator meets nearly all the requirements for high-fidelity physical simulation of RFA. The use of such simulators is likely to have impact on the training of electrophysiologists and the evaluation of novel RFA devices.
Keywords: electrophysiology; cardiac radiofrequency ablation; 3D-printing; Layfomm-40; physical simulation; simulation training; thermochromic pigments electrophysiology; cardiac radiofrequency ablation; 3D-printing; Layfomm-40; physical simulation; simulation training; thermochromic pigments

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MDPI and ACS Style

Wang, S.; Saija, C.; Choo, J.; Ou, Z.; Birsoan, M.; Germanos, S.; Rothwell, J.; Vakili, B.; Kotadia, I.; Xu, Z.; et al. Cardiac Radiofrequency Ablation Simulation Using a 3D-Printed Bi-Atrial Thermochromic Model. Appl. Sci. 2022, 12, 6553. https://doi.org/10.3390/app12136553

AMA Style

Wang S, Saija C, Choo J, Ou Z, Birsoan M, Germanos S, Rothwell J, Vakili B, Kotadia I, Xu Z, et al. Cardiac Radiofrequency Ablation Simulation Using a 3D-Printed Bi-Atrial Thermochromic Model. Applied Sciences. 2022; 12(13):6553. https://doi.org/10.3390/app12136553

Chicago/Turabian Style

Wang, Shu, Carlo Saija, Justin Choo, Zhanchong Ou, Maria Birsoan, Sarah Germanos, Joshua Rothwell, Behrad Vakili, Irum Kotadia, Zhouyang Xu, and et al. 2022. "Cardiac Radiofrequency Ablation Simulation Using a 3D-Printed Bi-Atrial Thermochromic Model" Applied Sciences 12, no. 13: 6553. https://doi.org/10.3390/app12136553

APA Style

Wang, S., Saija, C., Choo, J., Ou, Z., Birsoan, M., Germanos, S., Rothwell, J., Vakili, B., Kotadia, I., Xu, Z., Rolet, A., Namour, A., Yang, W. S., Williams, S. E., & Rhode, K. (2022). Cardiac Radiofrequency Ablation Simulation Using a 3D-Printed Bi-Atrial Thermochromic Model. Applied Sciences, 12(13), 6553. https://doi.org/10.3390/app12136553

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