RCIS Practice Test 2025 – All-in-One Exam Prep

Question: 1 / 400

A pacing generator that paces in the atria and senses the atria is known as?

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AAI

A pacing generator that paces in the atria and senses the atria is categorized as an atrial demand pacemaker. This type of pacemaker ensures that the device stimulates the atria when needed and senses the intrinsic atrial activity to avoid unnecessary pacing.

The designation "AAI" indicates that the pacemaker is designed specifically for this purpose: it paces the atria (the first "A"), senses the atria (the second "A"), and is in "demand" mode (the "I" indicating inhibited). In this mode, if the atrium captures and contracts on its own, the pacemaker does not deliver a pacing pulse, which is beneficial as it allows the heart to maintain more natural regulation.

This design serves particularly well for patients who have atrial arrhythmias or issues with the atrial conduction system, allowing for improved functionality of the heart with minimal intervention when the heart is operating correctly on its own.

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