Recently, the 18th National Symposium on Ventricular Arrhythmias (VAS-CHINA 2026) was held in Nanjing, Jiangsu. During the congress, Shanghai MicroPort EverPace MedTech Co., Ltd. (MicroPort EverPace) hosted a symposium titled "Complex Arrhythmia Ablation: Dual-Energy Applications and Transmural Lesion Creation."

The forum centered around four core directions: dual-energy homologous ablation strategies, quantitative assessment of transmural lesions, intracardiac echocardiography (ICE) modeling applications, and efficient clinical practice of pulsed field ablation (PFA). The discussions covered the precise performance of the EasyEcho™ Ultrasound Catheter (hereinafter referred to as the "EasyEcho™ ICE Catheter") in 3D modeling, the dual-energy homologous application of the PulseMagic™ TrueForce™ Pulsed Field Ablation Catheter (hereinafter referred to as the "PulseMagic™ TrueForce™ Pressure-Monitoring PFA Catheter") in ventricular arrhythmias and atrial fibrillation, and the integrated modeling and ablation workflow of the PulseMagic™ Spiral single-use magnetic-electrical positioning cardiac pulsed field ablation catheter (hereinafter referred to as the "PulseMagic™ Spiral Magnetic-Electrical Positioning PFA Catheter") developed by strategic partner Shangyang Medical. The symposium invited numerous domestic experts in electrophysiology to exchange and discuss clinical strategies, operational key points, and safety management of MicroPort EverPace's integrated interventional diagnosis and treatment solutions.

The symposium was co-chaired by Professor Liu Shaowen from Shanghai General Hospital and Professor Lu Qi from Affiliated Hospital of Nantong University. Professor Liu Shaowen noted that pulsed field ablation (PFA) technology is rapidly evolving, and the emergence of dual-energy catheters provides new options for managing complex arrhythmias in clinical practice. Professor Lu Qi expressed his hope that the in-depth analysis of real-world cases during this symposium would help clinicians better grasp the technical nuances and strategic choices in applying dual-energy ablation catheters.

Professor Fu Guohua from the First Affiliated Hospital of Ningbo University shared his experience with the PulseMagic™ TrueForce™ Pressure-Monitoring PFA Catheter in ventricular arrhythmias. Professor Fu pointed out that for ventricular arrhythmias originating from the left ventricular summit, papillary muscles, and para-Hisian regions, traditional radiofrequency ablation often faces challenges due to insufficient lesion depth and poor tissue selectivity. PFA offers tissue selectivity and achieves deeper myocardial lesions, but PFA alone carries a risk of coronary spasm. Dual-energy ablation, through the synergistic application of pulsed field and radiofrequency, enhances lesion depth and procedural safety, providing a superior treatment option for challenging foci.

Professor Fu systematically demonstrated the practical application and specific strategies of dual-energy ablation through multiple typical cases, including para-Hisian premature ventricular contractions (PVCs), summit PVCs, papillary muscle PVCs, and organic ventricular tachycardia, and expressed strong optimism for its broad clinical prospects.

Professor Tian Yanfeng from the First Affiliated Hospital of Harbin Medical University added that while PFA holds broad promise in the field of ventricular arrhythmias, more high-quality clinical data are needed in the future, particularly head-to-head comparative studies with traditional RF ablation, to further strengthen its evidence-based foundation.

Professor Feng Wenwei from Dongguan Traditional Chinese Medicine Hospital introduced the PulseMagic™ TrueForce™ Pressure-Monitoring PFA Catheter, noting that it is the first domestically produced pressure-monitoring dual-energy catheter equipped with saline irrigation, offering real-time contact force monitoring, PFEI (Pulsed Field Ablation Index) quantification, and irrigation functions. Professor Feng emphasized that good tissue contact is key to effective PFA lesion creation and procedural safety. The EI value enables accurate quantification of lesion depth, while the irrigation function effectively reduces the risk of hemolysis.

Professor Feng then presented multiple cases and provided recommendations on intraoperative nitroglycerin administration. Regarding the one-stop procedural strategy—whether to perform occlusion or PFA ablation first—Professor Feng suggested that performing PFA after occlusion may generate micro-bubbles due to arcing. In mitral isthmus ablation, the dual-energy catheter demonstrated a higher ablation block rate.

During the discussion session, Professor Qiu Zhichao from the First People's Hospital of Shaoguan noted that dual-energy catheters represent an important future direction. The design integrating pressure monitoring, irrigation, and dual-energy homologous capabilities gives the catheter significant advantages in transmural ablation and hemolysis protection. Professor Shen Wenzhi from Nanjing Drum Tower Hospital analyzed the impact of pulse mode on ablation depth from a physics perspective and proposed a differentiated strategy—using RF in coronary regions and PFA in esophageal regions—fully demonstrating the flexible "one catheter, multiple uses" advantage of the dual-energy catheter.

Professor Fu Minghuan from Sichuan Provincial People's Hospital shared his application experience with the PulseMagic™ Spiral Magnetic-Electrical Positioning PFA Catheter developed by Shangyang Medical, drawing from his extensive clinical practice. Professor Fu noted that for complex AF patients with comorbidities such as heart failure or advanced age, traditional RF ablation is time‑consuming, with a single procedure requiring 500 to 1,000 mL of irrigation, whereas PFA is both safe and highly efficient. Professor Fu presented a case of AF ablation: under local anesthesia, the EasyEcho™ ICE Catheter was used for 3D modeling of the left atrium, which demonstrated high concordance with CTA. After transseptal puncture, the PFA catheter was used for substrate mapping and ablation; with the aid of contact force indicators, precise quantified lesion delivery was achieved, and the total procedure time was only 10 to 15 minutes, fully demonstrating its efficiency. In another case, atrial flutter occurred before AF ablation; activation mapping and entrainment confirmed it as a roof‑dependent flutter around the left atrial roof, which was terminated after ablation. Following AF ablation, remapping with the PFA catheter confirmed immediate isolation, demonstrating the catheter's reliable performance in complex procedures.

During the discussion, Professor Yin Ran from the First Affiliated Hospital of Nanchang University reaffirmed the catheter's high efficiency and safety, noting that the PulseMagic™ Spiral catheter offers advantages over other PFA catheters in pulmonary vein isolation, with better tissue contact feel. Regarding post‑procedure hemolysis, Professor Yin observed a decrease in hemoglobin and suggested controlling the number of ablation applications to minimize renal impact. The conference chair, Professor Liu Shaowen, provided a recommendation for hemolysis monitoring: check complete blood count 4 days post‑procedure. Participating experts also discussed the determination of PFA ablation endpoints, acknowledging that this remains in an exploratory and accumulating stage.

Centered around the Columbus™3D EP Navigation System and built upon its five technology systems — "Electric, RF, Cryo, Magnetic, ICE" — MicroPort EverPace has established a comprehensive integrated solution for electrophysiological interventional diagnosis and treatment covering multiple energy modalities and clinical scenarios, and in collaboration with Shangyang Medical, highlighted the following products:

1.EasyEcho™ ICE Catheter: One‑handed operation without the need for locking deflection; enabled automatic modeling through the Columbus™ 3D Mapping System.

2.PulseMagic™ TrueForce™ Pressure‑Monitoring PFA Catheter: Dual‑energy homologous capabilities, real‑time pressure and ablation indicators, saline irrigation for safe ablation.

3.PulseMagic™ Spiral Magnetic‑Electrical Positioning PFA Catheter: Three‑dimensional "tower" configuration with multiple sizes to suit different cardiac anatomies; triple integration of modeling, mapping, and ablation; real‑time impedance‑based modeling for precise ablation.

A water tank heart simulator hands‑on area was specially set up at the booth to deepen visiting experts' understanding of product performance and clinical applications. Many experts participated in hands‑on operations, immersing themselves in the dual‑energy homologous and perfusion‑guided features of the PulseMagic™ TrueForce™ catheter, the efficiency and precision of the EasyEcho™ ICE Catheter in 3D modeling, and the efficient modeling and ablation capabilities of the PulseMagic™ Spiral catheter. The experts gave positive feedback on the comprehensive and efficient clinical solutions.

MicroPort EverPace, with its innovative product portfolio of " PFA, RF, Cryo, RMN, ICE," is providing clinicians with safer, more precise, and more efficient integrated solutions for interventional diagnosis and treatment in electrophysiology. Through multi‑dimensional and multi‑level academic exchange, this symposium fully demonstrated the technological innovation value and clinical utility of its products in the diagnosis and treatment of complex arrhythmias.

Moving forward, MicroPort EverPace will continue to deepen academic exchange and research innovation, committed to providing patients and physicians with more comprehensive products and professional services, and delivering a globally competitive integrated solution for interventional diagnosis and treatment in electrophysiology.