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应用二维超声心动图在１４００例受检者中检出左室条索（ＬＶＢ）１２０例（８．５７％）。其附着部位以左室后壁─室隔上部居多（８４．１６％），左室后壁─室隔中部次之（１５．８３％）。将１２０例ＬＶＢ中无器质性心脏病６２例与无ＬＶＢ的正常人群组６２例进行２４小时动态心电图（ＤＣＧ）对照，发现室性早搏发生例数以ＬＶＢ组显著为高（Ｐ＜０．００１），而房性早搏发生例数两组接近（Ｐ＞０．０５）。
120 cases (8.57%) of LVB were detected in 1400 subjects by two-dimensional echocardiography. The attachment site to the left ventricular posterior wall ─ ─ Department of the vast majority of septal (84.16%), the posterior wall of the left ventricular ─ ─ Septal middle (15.83%). A total of 120 patients with LVB without structural heart disease and 62 normal subjects without LVB were enrolled in 24-hour ambulatory electrocardiogram (DCG) control. The incidence of premature ventricular contractions was significantly higher in LVB group than in DCG group (P <0 .001), while the incidence of atrial premature beats in the two groups was close (P> 0.05).