室性早搏(室早)的危险分级对判断患者的预后及治疗的选择有一定的临床意义。室早的危险分级包括Lown、Myerburg和Schamaroth等3种方法。而Myerburg分级法比Lown的经典分级法更加实用、合 Premature ventricular contractions (premature ventricular) risk classification to determine the prognosis of patients and the choice of treatment has some clinical significance. The early risk rating of the room includes three methods, Lown, Myerburg and Schamaroth. The Myerburg classification than the classic classification of Lown more practical, cohesion