![]() Your risk of developing complete heart block increase with age, especially if you have heart-related issues. Congenital third-degree heart block affects about 1 in 20,000 to 25,000 live births, according to the National Organization for Rare Disorders. In rare cases, a baby may be born with the condition. Digoxin, a drug commonly used to treat heart failure, is also associated with heart block.Īn imbalance of certain electrolytes, such as potassium, can also trigger complete heart block. myocardial fibrosis (scarring of heart tissue)Ĭertain medications may also cause complete heart block.Īnti-arrhythmic drugs - which doctors prescribe to treat heart rhythms that are too fast, too slow, or unpredictable - can sometimes trigger first-, second-, or third-degree heart block.cardiomyopathy (weakening of the heart muscle).In many cases, it may be caused by some type of heart disease, such as: This article will take a closer look at complete heart block and its causes, symptoms, treatment, and outlook.Ĭomplete heart block has a variety of possible causes. Without prompt medical attention, it can be life threatening. Second-degree heart block means the impulses occasionally don’t reach the ventricles at all, causing the heart to skip a beat.Ĭomplete heart block is considered a medical emergency. First-degree heart block is the mildest and is characterized by a slowdown of electrical impulses from the atria to the ventricles. When this happens, the ventricles may not be able to contract properly and pump blood out to the lungs and the rest of the body.Ĭomplete heart block is the most serious type of heart block. One of these conditions is called complete heart block, also known as third-degree heart block.Ĭomplete heart block occurs when electrical impulses that begin in the heart’s upper chambers (atria) don’t travel down to the lower chambers (ventricles). When the heart’s usual steady flow of electrical signals is interrupted, it can result in potentially dangerous conditions. Your heart has a carefully coordinated electrical system that controls how your heart beats.
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