What is the typical impedance range for pacing leads?

The typical impedance range for pacing leads is generally considered to be between 200 and 1,000 ohms. This range is important because it reflects the resistance encountered by electrical currents as they pass through the pacing leads and the surrounding tissue. Maintaining impedance within this range is crucial for proper pacing function, as it helps ensure the effective delivery of electrical impulses to stimulate the heart muscle.

Impedance that is too low, such as in options suggesting 50 to 150 ohms, could indicate a short circuit, while values that are too high may suggest lead malfunction or dislodgment. Thus, a range of 200 to 1,000 ohms is optimal for the functionality and reliability of pacemaker systems. It indicates good contact with the myocardial tissue and ensures the efficient conduction of electrical signals necessary for heart rhythm management.