Atrial Fibrillation

Atrial Fibrillation occurs when the atrial sites depolarize simultaneously at 400-600 bpm enabling the atrium to contract but only quiver. The most common terms used with Afib less than 100 bpm is Controlled VR (ventricular respone) or SVR (slow ventricular response). If the rate is greater than 100 bpm then it is called Uncontrolled VR (ventricular response) or RVR (rapid ventricular response). If the rate goes over 150 bpm, then t'll be identified as an AVNRT (atrio-ventricular nodal reentry tachycardia) SVT (supraventricular tachycardia). It is the most common SVT diagnosed in patients.

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