AF, with full name of atrial fibrillation, refers that the atrium cordis cannot obtain overall synchronously coordinated contraction and relaxation, but show irregular trembling or peristalsis with high frequency. If AF can automatically stop, less than 7 days of duration, it is paroxysmal AF, accounting for about 33.7% in the disease; if it cannot automatically stop, but less than one year of duration, it is persistent AF, accounts for about 16.7%; above one year of duration, it is persistent AF, accounts for about 49.5%.

Atrial fibrillation is very common in clinic. When patients occur AF, they may have palpitation, chest discomfort, shortness of breath, weariness, or tired; etc. feelings; few people will feel giddy and faint. Palpitation is the most common symptom, that is, patients feel the heat beating is strong, disordered or too fast. Chest discomfort, refers to patients' chest pain, oppression or uncomfort. Shortness of breath, refers to the feeling of difficulty for breathing during light physical activity or at rest. Some patients although suffer from AF, there is no self-conscious symptom. However, the harm of this disease still exists and the treatment cannot be neglected due to no symptom, so as to avoid sudden attack of thrombus to threaten the life.

When you appear the symptom such as palpitation, shortness of breath and so on, you might as well count the pulse. If it is found the heartbeat is not average in stength and weakness; the rhythm is in disorder; and the frequency is less than the heartbeat, you need feel highly suspected whether it is "AF". Then you should go to hospital to have the examination of auscultation and cardiogram to have diagnosed. Individual patients with paroxysmal symptom may also need to carry out the dynamic ECG.

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