在埋藏式心脏复律除颤器(ICD)应用初期,由于相关技术的不成熟,ICD除颤失败时有发生。为了确保ICD能可靠地检测到心室颤动发生并能成功除颤,医生往往需要在植入ICD时诱发心室颤动。但随着ICD除颤性能提高,临床上除颤失败事件已鲜有发生,更重要的是除颤阈值(DFT)测试可给患者带来一定的危险。目前支持或不支持DFT测试的各有自己的证据和观点支持。因此其争议还将持续。 In the early stage of ICD application, ICD defibrillation failed due to the immature technology. To ensure that the ICD can reliably detect ventricular fibrillation and successfully defibrillation, doctors often need to induce ventricular fibrillation upon ICD implantation. But as ICD defibrillation improves, defibrillation failures have not occurred clinically, and more importantly defibrillation threshold (DFT) testing can present patients with some risk. DFT tests are currently supported or not supported by their own evidence and opinion. Therefore, the dispute will continue.