In patients with complete AV block but normal sinus pacing, what type of pacing will be utilized?

In patients with complete AV block but normal sinus pacing, what type of pacing will be utilized?

• A. AV sequential pacing
• B. P wave triggered pacing
• C. Atrial pacing
• D. Rate responsive pacing

Answer: (B)

In the context of patients with complete AV block and normal sinus pacing, the correct approach is to utilize P wave triggered pacing. This is because, in complete AV block, the electrical signals from the atria are not conducted to the ventricles. However, if there is normal sinus rhythm, the atrial pacing can still work effectively.

P wave triggered pacing allows the pacing device to sense the P waves generated by the sinus node. When a P wave is detected, the pacemaker can then appropriately stimulate the ventricles to maintain synchronization between atrial and ventricular contractions. This method helps in preserving physiological pacing and coordinating heart rhythms, which is a crucial aspect in managing patients with AV block.

Utilizing this technique primarily focuses on ensuring that the heart continues to beat in a coordinated manner, mimicking natural cardiac function as closely as possible despite the block. It provides the necessary ventricular pacing in response to the atrial activity, ensuring efficient heart rhythm management.