室性早搏(室早)的种类很多,包括偶发、频发、单源、多源等。当每隔一次或二次窦律就规律出现一次室早时,则称为室早二联律、室早三联律,而礼花式室早是指反复出现的连发三次的室早。[定义]心电图成对出现二次室早的现象称为成 Premature ventricular contractions (premature) are many types, including sporadic, frequent, single source, multi-source. When once or second sinus law on the regular occurrence of a room early, then known as room early diathesis, early trigeminal room, and fireworks early refers to repeated episodes of room early three times. [Definition] Electrocardiogram paired appear early secondary phenomenon known as the second room