At present

the research on the electromagnetic interference（EMI） of implanted pacemaker focuses on medical radiations. However

the EMI caused by power system transients on implanted pacemaker is not clear. In this paper

an artificial human body model was established by connecting pacemaker to a pork heart immersed in saline solution. Microsecond pulsed currents were produced to simulate transient processes occurring in nearby power network of the human body model. Effects of the magnitude of current

the direction of conductors

the thickness of subcutaneous fat

and saline weight concentration level on human electromagnetic field were investigated. Experimental results indicate that during transient processes

EMI with the similar magnitude of output pulses of pacemaker exists. The severity of EMI increases with the increase of magnitude of current and thickness of subcutaneous fat. In order to reduce EMI

a novel interwinding form of handling leads in pocket is proposed. By changing the winding of pacing leads from parallel to interwinding form

the induced EMI by external transient processes can be reduced obviously. Eventually

recommendations are made to assist pacemaker wearers who may be exposed to EMI created by power system transients.