How do you clinically distinguish between pericardial effusion from volume overload versus uremic pericarditis in advanced CKD?

I don't think volume overload by itself can lead to pericardial effusion; rather, there has to be some form of pericardial irritation. I wonder if fluid overload would make the pericardial effusion worse, which is likely the case. Patients on dialysis, if they have pericardial effusion, I would auto...