对永久性心脏起搏,目前多主张采用经静脉心内膜电极,理由是死亡率较低,心内膜起搏所需的能量亦较低,但亦有报道认为采用心肌内电极法,其刺激阈值较心内膜电极为低。在经胸腔按置心肌电极的过程中,采 For permanent cardiac pacing, the current advocate the use of transthmatic endocardial electrodes, the reason is lower mortality, endocardial pacing required energy is also low, but it has also been reported that the use of intramyocardial electrode method, its Stimulation threshold than the endocardial electrode is low. In the thoracic cardiac electrode placement process, mining