Hello, very confused nursing student here, if somebody could please help clarify that would be great :) I understand that with a Swan Ganz you're only supposed to infuse through the VIP/CVP proximal ports which exit into the RA, and that you're NOT supposed to infuse through the PAP/distal lumen (unless it's a code emergency). I've been doing quite a bit of research but haven't been able to find an explanation as to why. Does it have something to do with the RA being a better option because it's a bigger chamber with lower pressure versus the PA which has higher pressure and is smaller/narrower in size?