There is one odd side effect to the treatment...not for Rho, but for our apartment.
The dialysis machine is a rather large unit, and I believe it runs on a 220V current. When Rho is plugged up to it at night, it causes the lights in our bathroom to flicker, sorta like a strobe effect. When you're using the bathroom at 3 in the morning, it tends to freak you out a bit.
I was concerned that it would eat up a lot of power, but I didn't notice a huge dent in our electric bill last month, so that's a good thing.