How does the material of an electrode influence impedance?

The material of an electrode plays a significant role in influencing impedance because the electrical properties of different materials can impact how easily electrical current flows through them. High-quality materials, such as certain types of metals, typically exhibit lower resistivity and better conductivity, which leads to reduced impedance. This lower impedance allows for more efficient delivery of electrical signals to the heart tissue, ensuring effective pacing and stimulation.

In contrast to this, materials that are not conductive or have high resistivity will result in higher impedance, which can hinder the performance of pacing devices. The effectiveness of pacing is dependent on the ease with which the electrical impulses can pass through the interface of the electrode and the biological tissue. Therefore, using materials known for their excellent conductive properties is essential for minimizing impedance, ensuring reliable and efficient functioning of pacing systems.