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最近新型治疗心衰的起搏器已问世(A),其由三部分组成:①刺激迷走神经的电极:该电极在外科手术暴露颈迷走神经干后,袖式包绕其外部,刺激迷走神经干(B);②起搏器:置于右胸前区,可发放右室起搏脉冲和迷走神经干刺激脉冲;③右室电极:植于右室心尖部(C、D)。治疗时,脉冲刺激在QRS波感知70ms后发放,脉宽1ms,刺激频率与自身心率相同或55ppm,呈间歇性发放。其发放的电脉冲可兴奋迷走神经,减慢心率,减弱心肌收缩力,降低交感活性,与服用β受体阻滞剂的作用一样。
A new pacemaker has recently come out to treat heart failure (A), which consists of three components: (1) an electrode that stimulates the vagus nerve: the electrode wraps around the outside of the vagus nerve trunk following surgical exposure and stimulates the vagus nerve trunk (B ); Pacemaker: placed in the right chest area, can be issued right ventricular pacing pulse and vagus nerve stimulation pulse; ③ right ventricular electrode: implanted in the right apex apical (C, D). Treatment, pulse stimulation in the QRS wave perception sent after 70ms, pulse width 1ms, stimulation frequency and their own heart rate or 55ppm, intermittent release. The electrical pulse can excite the vagus nerve, slow down the heart rate, reduce myocardial contractility and reduce sympathetic activity, and taking the same effect of β-blockers.