How are sensing codes described in the NBG coding system?

In the NBG coding system, sensing codes are vital for understanding how the pacing device senses electrical activity in the heart. The correct answer describes the following: O represents no sensing capability, A indicates sensing in the atrium, V signifies sensing in the ventricle, D refers to dual sensing capabilities (both A and V), and S stands for single sensing, which can be either atrial or ventricular.

This system is designed to help clinicians and technicians interpret the behavior of pacing devices and their ability to detect cardiac signals accurately. Understanding these codes is crucial for optimizing patient management and ensuring appropriate pacing strategies.

The other options describe different aspects or configurations, but they do not accurately represent the specific sensing codes used in the NBG coding system. For example, one of the options refers to rate modulation and inhibition, which pertain to the functionality of pacing and response to heart rate rather than sensing specific chambers of the heart.