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室性期前搏动室性期前搏动(PVC)常见于伴或不伴结构性心脏疾病(SHD)患者,有患者:PVC频发而无症状,另有患者症状明显而异位搏动较少。多个研究证实频发.PVC与潜在可逆性的心肌病之间存在关联,所选患者心肌病在导管消融后消失。已报道与左心室功能障碍相关的24h PCV数即负荷值通常达到总心搏数的15%~25%以上,尽管可低达10%。然而,鉴于PVC可为心肌病的结果 ,因此,对于特定的患者难以前瞻性地确定这种
Ventricular premature beats Ventricular premature beats (PVC) are common with or without structural heart disease (SHD) patients, patients: PVC frequent and asymptomatic, while others obvious symptoms and less ectopic beats. Multiple studies have documented frequent episodes of a relationship between PVC and potentially reversible cardiomyopathy, with selected cardiomyopathy disappear after catheter ablation. It has been reported that the number of 24-h PCVs associated with left ventricular dysfunction, ie, the load, usually reaches above 15% to 25% of the total heart rate, albeit at as low as 10%. However, given that PVC can be the result of cardiomyopathy, it is difficult to prospectively identify this for a particular patient