早搏是指在窦性或异位心律的基础上,心脏某一起搏点比基本心律提前发出激动,过早地引起心脏部分或全部除极。发生于心室的早搏称室性早搏(室早)。正常人群中室早较常见,常无临床意义。如 Premature beat refers to sinus or ectopic rhythm based on the heart of a pacemaker than the basic heart rhythm issued in advance, premature to cause some or all of the heart in addition to the pole. Premature ventricular contractions that occur in ventricular premature beats (room early). Normal people in the room earlier than the common, often without clinical significance. Such as