Health News (By Zheng Yingfan and Li Jingyu) Recently, there is good news from Changzheng Hospital of the Second Military Medical University that the National Natural Science Foundation of China (NSFC) funded project “Pulmonary vein vestibular radial linear ablation for atrial fibrillation” led by Professor Zhao Xue of the Department of Cardiology of the hospital has passed the validation with perfect score. Animal experiments and clinical practice of 9 patients with atrial fibrillation have proved that this technology has further improved the efficiency of atrial fibrillation patients, especially the routine postoperative electrical triggering test, with atrial fibrillation no longer being triggered as the endpoint of the procedure, and has found an effective way to cure atrial fibrillation. The most popular pulmonary vein vestibular ring ablation (pulmonary vein electrical isolation) has been in clinical use for more than 10 years, and its recent cure rate for paroxysmal AF is in the range of 75%, with a recurrence rate of about 30% and a certain probability of pulmonary vein stenosis. The ablation endpoint of pulmonary vein electrical isolation is only pulmonary vein electrical isolation rather than atrial fibrillation not being induced. Leakage on the ablation loop is the biggest contraindication of this procedure, and the regret of loop ablation is that leakage is inevitable, and incomplete pulmonary vein electrical isolation is considered to be the main cause of postoperative complications of tachyarrhythmia. Even if pulmonary vein isolation is achieved, atrial fibrillation may still occur, so pulmonary vein isolation is not a perfect ablation procedure. Since ancient times, there have been two strategies to treat water: “blocking” and “unblocking”. The occurrence of atrial fibrillation is now thought to be due to disturbances in the pulmonary venous current. Pulmonary vein electrical isolation is a strategy of “plugging” the pulmonary vein current, but the plugging should be reliable. Atrial fibrillation pulmonary vein vestibule radial linear ablation is based on the basic idea of pulmonary vein current sparing management, which envisages the implementation of radial linear radiofrequency ablation in the pulmonary vein vestibule to shunt and sparing management of ectopic pulmonary vein current. Conventional pulmonary vein electrical isolation is to draw a circle in each side of the pulmonary vein vestibule, and the technical difficulty is whether the two circles are drawn realistically. Vestibular radial ablation, which draws a line along the long axis of the pulmonary veins, is simple, easy to perform, safe, and results in a reduced incidence of pulmonary vein stenosis. In addition, radial ablation does not result in isolation of atrial tissue and preserves the overall contractile function of the atria. The results of animal studies have shown that vestibular radial ablation is highly effective in inducing persistent atrial fibrillation. 3 dogs with preoperative atrial fibrillation induced by one electrical stimulation lasting more than 30 minutes were completely unable to induce atrial fibrillation again after receiving pulmonary vein shunts with 10 repeated 30-second electrical stimulations. 5 dogs with preoperative paroxysmal atrial fibrillation induced by 10-20 seconds were completely unable to induce atrial fibrillation again. The ablation of 12 patients with clinical atrial fibrillation demonstrated that pulmonary vein shunting can be a time-saving procedure based on the reduced difficulty of catheter manipulation; it does not require detection of pulmonary vein potential, thus eliminating the need for a loop electrode to evaluate whether pulmonary vein currents are isolated and A long sheath tube can be eliminated, which can save about 20,000 yuan of material cost per case compared with the existing atrial fibrillation electrical isolation, greatly reducing the cost of atrial fibrillation ablation and lowering medical costs.