Method Analysis was done in 65 cases with permanent pa cemaker implanted Result Variation of QRS wave was not relat ed to pacemaking threshold, pacemaking impedance, peak value of R wave and QRS interval.

• 分析起搏心电图变异与起搏器参数及心电图QRS时间之间的关系。 结果 QRS波形变异与起搏阈值、起搏器阻抗、R波峰值及QRS时间无关。