What unit is current measured in within a pacing system?

In a pacing system, current is measured in milliamps (mA), which is a subunit of the ampere. This unit is particularly relevant in cardiology as pacing devices deliver electrical impulses in milliamps to stimulate the heart. By using milliamps, healthcare providers can precisely adjust the settings on pacemakers to ensure that enough current is delivered to depolarize the cardiac cells and maintain effective heart rhythms.

Other units mentioned serve different purposes: volts measure electrical potential, which is important in understanding the voltage output of a device; ampere is a measure of current but is often too broad for the low-level currents used in pacing; and ohms relate to resistance in a circuit, which impacts how current flows but does not directly measure current itself. Therefore, milliamps provides the most accurate representation of the current specifically relevant to pacing systems.