What is the definitive treatment of symptomatic 3rd degree AV block?

The definitive treatment of symptomatic third-degree AV block is the implantation of a permanent pacemaker. This device helps restore normal heart rhythm by providing electrical stimulation to the heart when the natural conduction system fails. Immediate management may also include the use of temporary pacing or medications to stabilize the patient, but a permanent solution is essential for long-term management.