Final answer:
In the absence of a reversible cause, all patients with symptomatic 2:1 second-degree atrioventricular block should be managed with a pacemaker.
Step-by-step explanation:
In the absence of a reversible cause, all patients with symptomatic 2:1 second-degree atrioventricular block should be managed with a pacemaker.
Atrioventricular (AV) block is a condition where there is a disruption in the electrical conduction between the atria and ventricles of the heart. Second-degree AV block is characterized by intermittent failure of electrical impulses from the atria to the ventricles.
In symptomatic 2:1 second-degree AV block, every other atrial impulse is blocked at the AV node, resulting in two atrial impulses for every ventricular impulse. This can lead to symptoms such as dizziness, fatigue, or fainting.
To manage symptomatic 2:1 second-degree AV block, a pacemaker is the recommended treatment. A pacemaker is a small, implantable device that sends electrical signals to the heart to regulate the heartbeat. It ensures that the ventricles receive a consistent electrical signal, preventing the skipped beats and maintaining an appropriate heart rate.