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Doctors usually follow up a new diagnosis of atrial fibrillation with additional tests to look for an underlying cause or trigger. These tests may include blood tests, an echocardiogram (an ultrasound of the heart), and/or a chest X-ray. Dr. Leslie Kernisan is the author of a popular blog and podcast at BetterHealthWhileAging.net. She is also a clinical instructor in the University of California, San Francisco, Division of Geriatrics. Atrial fibrillation, also sometimes called A-fib, is usually diagnosed with an electrocardiogram (ECG). An ECG is a noninvasive diagnostic procedure that uses electrodes taped to the skin on the chest to measure the electrical activity within the heart. This information creates a tracing, which can be printed on paper or viewed on a monitor. Occasionally atrial fibrillation is noticed incidentally on an ECG or other heart test. More commonly, doctors order an ECG because a person is having symptoms that could be caused by atrial fibrillation, such as palpitations, a racing heartbeat, dizziness, or shortness of breath. Transtelephonic monitor: When you develop symptoms of atrial fibrillation, a strip of your current heart rhythm can be transmitted to your doctor’s office over the telephone, using a monitor with two bracelets or by placing the monitor against your chest wall. How is atrial fibrillation diagnosed? The most commonly used tests to diagnose atrial fibrillation include: Electrocardiogram (ECG or EKG): The ECG draws a picture on graph paper of the electrical impulses traveling through the heart muscle. An EKG provides an electrical “snapshot” of the heart. For people who have symptoms that come and go, a special monitor may need to be used to capture the arrhythmia. Holter monitor: A small external recorder is worn over a short period of time, usually one to three days. Diagnosing AFib: EKG Your doctor will diagnose atrial fibrillation on an electrocardiogram (EKG). This heart tracing shows a distinct pattern in the electricity of the heart that your doctor can diagnose. If your AFib comes and goes you may need to wear a continuous heart monitor (Holter monitor) to diagnose the abnormal rhythm. Some of the tests used for making an atrial fibrillation diagnosis include: 1  Electrocardiogram (EKG) 2  Holter monitor. 3  Event monitor. 4  Echocardiogram. 5  Blood tests, including thyroid tests. 6  Electrophysiology study (EPS). Atrial fibrillation (AFib) is the most common type of abnormal heart rhythm. Atrial fibrillation or AF can lead to serious heart complications like stroke. Learn about diagnosing and treating AFib. Atrial fibrillation is a risk factor for stroke. About 15 percent of all people who have strokes have AFib. Because of the irregular and chaotic flow of blood through the heart, small blood clots can form in the heart chambers when you have atrial fibrillation. These clots can travel through the bloodstream to the brain, causing a stroke. As part of the medical history, the healthcare provider will ask a number of questions, including questions about: 1  Current symptoms. 2  Medical conditions. 3  Current medications. 4  Family history of medical conditions. 5  Social history, including alcohol use and smoking. Query: how is afib diagnosed ekg
Output:
Your doctor will diagnose atrial fibrillation on an electrocardiogram (EKG). This heart tracing shows a distinct pattern in the electricity of the heart that your doctor can diagnose.