Atrial fibrillation history and symptoms

Atrial Fibrillation Microchapters
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

History

The history of the individual's atrial fibrillation episodes is likely the most important part of the evaluation. Distinctions should be made to those who are entirely asymptomatic when they are in atrial fibrillation (in which case the atrial fibrillation is found as an incidental finding on an electrocardiogram or physical examination) and those who have gross and obvious symptoms due to atrial fibrillation and can pinpoint whenever they go into atrial fibrillation and revert to sinus rhythm.

Symptoms

In general, clinical manifestations are;

1. Palpitations
2. Chest pain
3. Dyspnea
4. Fatigue
5. Lightheadedness
6. Syncope: Syncope is an uncommon but serious complication that is usually associated with sinus node dysfunction or hemodynamic obstruction, such as valvular aortic stenosis, HCM, cerebrovascular disease, or an accessory AV pathway.

Atrial fibrillation is usually accompanied by symptoms related to the rapid heart rate. Rapid and irregular heart rates may be perceived as palpitations, exercise intolerance, and occasionally produce angina (if the rate is faster and puts the heart under strain) and congestive symptoms of shortness of breath or edema. Sometimes the arrhythmia will be identified only with the onset of a stroke or a transient ischemic attack (TIA, stroke symptoms resolving within 24 hours). It is not uncommon to identify atrial fibrillation on a routine physical examination or electrocardiogram (ECG/EKG), as it may be asymptomatic in many cases.