First degree AV block risk factors
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Ahmed Elsaiey, MBBCH [2]
Overview
Risk factors
Congenital Heart Block
- If a pregnant woman has an autoimmune disease, such as lupus, her fetus is at risk for heart block.
- Autoantibodies in some autoimmune diseases can damage the AV node and causes heart block.
- A newborn of patients with congenital heart defects has increased risk of developing heart diseases including heart block.
Acquired Heart Block
- Common risk factors of acquired heart block include the following:
- Patients with history of heart diseases as heart failure, coronary heart disease, and cardiomyopathy.
- Patients with sarcoidosis and defenerative muscle disorders as Lev's disease and Lenegre's disease.
- Exposure to toxic substances or taking certain medicines, such as digitalis, also can raise your risk of heart block.
- Well-trained athletes and young people are at higher risk for first-degree heart block caused by an overly active vagus nerve.