The difference between atrial fibrillation and premature auscultation

Atrial fibrillation and premature beats are common clinical arrhythmias, but the two are also different. For example, patients in auscultation, atrial fibrillation can be manifested as increased heart rate, up to 100 beats per minute, or even 160 beats. And premature beats in patients, there may be physiological reasons, heartbeat is normal.