What are the two types of single chamber pacemakers?

What are the two types of single chamber pacemakers?

• A. VVI pacemaker and AAI pacemaker
• B. VVI pacemaker and TPS
• C. AAI pacemaker and TPS
• D. VVI pacemaker and dual chamber pacemaker

Answer: (A)

Single-chamber pacemakers pace and sense in only one heart chamber, either the atrium or the ventricle. In the atrial single-chamber mode, the device paces and senses the atrium and inhibits pacing when intrinsic atrial activity is present, known as AAI. In the ventricular single-chamber mode, it paces and senses the ventricle and inhibits when a natural ventricular beat occurs, known as VVI. These two options cover the single-chamber configurations. Other terms like a temporary pacing system or a dual-chamber device involve different setups (temporary use or two pacing leads), so they aren’t single-chamber types.

Single-chamber pacemakers pace and sense in only one heart chamber, either the atrium or the ventricle. In the atrial single-chamber mode, the device paces and senses the atrium and inhibits pacing when intrinsic atrial activity is present, known as AAI. In the ventricular single-chamber mode, it paces and senses the ventricle and inhibits when a natural ventricular beat occurs, known as VVI. These two options cover the single-chamber configurations. Other terms like a temporary pacing system or a dual-chamber device involve different setups (temporary use or two pacing leads), so they aren’t single-chamber types.