Sixteen patients implanted dual-sensor (Activity+Respitator) rate adaptive pacing; Fourty-two patients implanted activity-based sensor rate adaptive pacing; four patients implanted respirtator-based sensor rate adaptive pacing.

• 结果62例随访平均6年，无发生起搏综合征，临床症状明显改善，多数恢复生活自理能力和工作。