1st degree AV block is not dangerous.
Atrioventricular (AV) block refers to an abnormal delay in the conduction of impulses from the atria to the ventricles or the inability to reach the ventricles. The degree of block can be categorized into first degree (time delay), second degree (partial disruption of impulse conduction), and third degree (total disruption of impulse conduction), with first-degree AV block being an incomplete AV block, in which there is a delay in the conduction time only.
No specific treatment is required for first-degree AV block, and the prognosis for patients with this disease is generally good, with no significant adverse effects on their quality of life or life expectancy, and pacemakers are not recommended for these patients. If the examination reveals that the disease is caused by or secondary to another primary disease, the treatment can be tailored to the specific cause of the disease.
If first degree AV block progresses to second degree type II or third degree AV block, artificial pacemaker therapy should be actively pursued to improve the prognosis of patients.