In pacing terminology, what does ‘oversensing’ typically lead to?

Oversensing refers to the phenomenon where a pacemaker detects signals that are not representative of the heart's actual electrical activity, which can interfere with its pacing function. This misinterpretation often leads the device to incorrectly assess the heart's rhythm, resulting in reduced or inhibited pacing when it is actually needed. In essence, the pacemaker oversenses an existing electrical impulse, which may decrease the heart rate response. Consequently, the heart may not beat as frequently or effectively as it should, leading to a diminished heart rate response to the body's needs. Understanding this concept is crucial for ensuring proper pacing and maintaining optimal heart function.