The ultrasound manifestations of atrial fibrillation are E-E interval is absolutely unequal, A peak disappears, left atrial enlargement and so on. The specific performance varies from person to person.
1. E-E interval is absolutely unequal: on M-mode ultrasound, the E-E interval is absolutely unequal, which is mainly due to the absolute irregularity of heart rhythm after the emergence of atrial fibrillation, resulting in the absolute inequality of E-E interval on M-mode ultrasound.
2. Disappearance of peak A: the disappearance of peak A on pulsed Doppler is a very strong evidence of atrial fibrillation, which indicates that the contractile function of the right atrium is close to loss.
3. Enlargement of the left atrium: the left atrium can be seen enlarged in the cardiac view. Enlargement of the left atrium can indicate that atrial fibrillation is very difficult to recover by drugs. It is also accompanied by a thrombus in the wall of the left auricle.
Since cardiac ultrasound is not specific in the diagnosis of atrial fibrillation, an electrocardiogram is recommended to confirm the diagnosis.