Abstract
A stainless steel cored coil electrode was taken out eight years after implantation in a patient with complete heart block. The appearence and mechanical strength of the extracted electrode was unchanged from those before implantation, although minimal degree of electrolysis was suspected by histological examinations and brownishly tinged silicone rubber sheath. A stainless steel electrode was found durable for a long-term cardiac pacing when used in biphasic pulse stimulation.
