Regular Atrial Fibrillation

Whenever you see AF that is almost regular, it means that there is a junctional escape, which may be standard or accelerate to a higher speed. This should make you think of digoxin toxicity. The trouble with digoxin toxicity is that the level doesn't necessarily correlate, because if you have low K then you will get toxicity changes even if the level is not that high. So, need to keep people on digoxin, at a normal K level.