The point I was trying to make is that PVCs and afib are not mutually exclusive - they're just not related entities. The parent brought up sinus rhythm, and I wanted to make sure everyone was on the same page regarding the fact that PVCs and afib are very different things that can seem similar if the only data point you look at is regularity of the rhythm.
Yes, maybe just looking at RR intervals maybe. Otherwise AFib leads to irregular undulations, at about the amplitude of a p-wave, whereas PVCs are longer and weird looking QRS complexes.
AFib is a "supraventricular" Tachycardia, whereas PVCs are more of a ventricular Tachycardia. Though I'm not sure if AFib always leads to significant Tachycardia at all.
The reason I brought up “normal sinus rhythm” and “atrial fibrillation” a few posts up is because those are two of the four possible results produced by the Apple Watch EKG app, the other two being “low and high heart rate” and “inconclusive”.
The point I was trying to make is that PVCs and afib are not mutually exclusive - they're just not related entities. The parent brought up sinus rhythm, and I wanted to make sure everyone was on the same page regarding the fact that PVCs and afib are very different things that can seem similar if the only data point you look at is regularity of the rhythm.