Patients with persistent AF also include patients with long-standing AF in whom cardioversion has not been indicated or attempted, often leading to permanent AF.
持续性房颤患者还有可能是没进行或尝试心脏复律治疗的长期房颤患者，通常会导致永久性房颤。
Persistent AF may be either the first presentation of AF or the result of recurrent episodes of paroxysmal AF.
房颤首次发作有可能就是持续性房颤，但是阵发性房颤复发也有可能引起持续性房颤。
To set up a distinguish boundaries of safety and quality AF and common AF at products, retail, wholesale and production stage on the AF supply chain;
从产品、零售、流通和生产的各个阶段，把安全优质农产品同普通农产品加以区别；
Atrial fibrillation (Af) is the most commonly cardiac arrhythmia except premature ventricular beats. The therapy of Af with pacemaker is a valid method to the chronic and stubborn Af now.
心房颤动是室性早博后第二位的心律失常，起搏治疗心房颤动目前已成为难治性心房颤动的有效治疗途径。
Atrial fibrillation (Af) is the most commonly cardiac arrhythmia except premature ventricular beats. The therapy of Af with pacemaker is a valid method to the chronic and stubborn Af now.
心房颤动是室性早博后第二位的心律失常，起搏治疗心房颤动目前已成为难治性心房颤动的有效治疗途径。
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