Methods The pacing threshold and sensing function were measured 1,2,3,4,6,8,10,and 12 weeks after both carbon and Elgiloy endocardial electrode leads were implanted into dogs right ventricular apex.

• 方法将一对电极导线植入犬的右室心尖部后，定期测量电极的电参数和心功能，3个月后处死犬，进行形态和光镜病理检查。