Atrial fibrillation (AF) and atrial flutter (AFL) are two types of abnormal heart rhythm that originate in the atria, the upper chambers of the heart. AF is an irregular heartbeat characterized by chaotic electrical activity while AFL is a regular but abnormally fast heartbeat. While similar in many ways, there are important differences between AF and AFL that can help a doctor diagnose and treat each condition.
Electrical Activity
The main difference between AF and AFL is the type of electrical activity that occurs in the atria. AF is an irregular rhythm with chaotic electrical activity, while AFL is a regular rhythm with abnormal electrical activity. In AF, the electrical signals in the atria become disorganized and fire off in an uncoordinated manner. This causes the atria to quiver, or fibrillate, instead of contracting normally. In AFL, the electrical signals in the atria fire off in a regular but abnormally fast pattern, causing the atria to contract too quickly.
Heart Rate
The heart rate is another important difference between AF and AFL. In AF, the heart rate is usually too fast, often over 100 beats per minute. In AFL, the heart rate is usually too fast as well, but it is usually more regular than in AF. The heart rate in AFL is often around 250 beats per minute, although it can be higher or lower.
Symptoms
The symptoms of AF and AFL are also different. AF can cause symptoms such as a racing heart, lightheadedness, shortness of breath, and chest pain. AFL can cause symptoms such as palpitations, lightheadedness, and shortness of breath. However, in some cases, AFL can cause no symptoms at all.
Diagnosis and Treatment
Diagnosing AF and AFL typically requires a physical exam and an electrocardiogram (ECG). An ECG is a test that records the electrical activity of the heart. It can show the type of abnormal rhythm present and help differentiate between AF and AFL. Treatment for AF and AFL can include medications, a procedure to destroy the abnormal electrical pathways, or a pacemaker. The type of treatment depends on the type of abnormal rhythm present.
In conclusion, AF and AFL are two types of abnormal heart rhythm that have important differences. AF is an irregular heartbeat characterized by chaotic electrical activity, while AFL is a regular but abnormally fast heartbeat. The symptoms, diagnosis, and treatment of AF and AFL can vary, and it is important to differentiate between the two conditions in order to provide the most effective treatment.