Some medical conditions that can cause atrial flutter include an overactive thyroid, high blood pressure (hypertension), coronary artery disease, heart valve disorders, and congenital heart issues. The unusually fast beating of the atria can lead to a faster heartbeat, which can eventually cause tachycardia. One of the main causes of atrial flutter is the reentry of the nerve impulse back into the SA circuit in the right atrium, causing a cyclical flow of nerve impulses. Individuals with heart flutter have abnormal conduction of the SA node, which causes the upper chambers to contract rapidly rather than having a controlled contraction that completely empties the atria. The SA node is commonly referred to as the pacemaker of the heart, as it helps regulate your pulse rate. The SA node directs the contraction of the upper chambers of the heart, which helps move blood into the lower chambers, known as the ventricles. There are two neural nodes in the heart: the sinoatrial node (SA node) and the atrioventricular node (AV node). ![]() ![]() The main cause of heart flutter has to do with the transmission of electrical impulses across the heart. Over time, this can lead to the development of further arrhythmias like atrial fibrillation (AFib) and heart failure. Typically a heart flutter refers to an atrial flutter (AF), an arrhythmia that impacts the timing of the contraction of the upper chambers of the heart, known as the atria.Ītrial flutter causes an increase in the rate of contraction in the upper chambers of the heart. What Is a Heart Flutter?Ī heart flutter is a condition in which the heart beats in an abnormal heart rhythm. When the heart beats out of sync, it can cause the sensation of heart palpitations, reduce the effectiveness per stroke, cause an elevation in heart rate, and increase your risk factors for life-threatening conditions like stroke, heart disease, and heart failure. Every heartbeat is a coordinated contraction of the heart muscle that maximizes the efficiency of cardiac output - but sometimes, these heartbeats can experience some dysfunction. The heart is constantly beating to keep blood circulating throughout your body.
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