The clinic where I used to work did reuse; I'm not sure exactly what kind of log you refer to, but I do know that extensive records were kept. Each dialyzer had the pt's name and other info permanently attached to it; each time it was reused, a paper label was attached to the other side (this had the same info, plus the number of times this dialyzer had been processed. The limit was initally 13 times - until about 2001 or so - and was then increased to 100 times. Of course, the dialyzer had to pass each time it was reprocessed or would be discarded).
To minimize the risk of putting a pt on the wrong dialyzer two staff members had to verify the pt's name on the
permanent label; later they required that the pt verify it as well. Staff members and/or pt initialed the tx sheet; later, with computers, only the staff members could do so. However, mistakes and mix-ups still happened, although rare.
Most nurses I talked to told me this had happened to them once over the years; one LPN put 2 or 3 pts on the wrong dialyzer in the time I worked there (that we know of). Why did he never get fired? Need I say it? (Yes, it was too hard to replace him, or so management thought

).
Another way that mix-ups can occur is if the reuse tech puts the wrong label on the dialyzer (i.e., the permanent and paper labels do not match). Nurses and PCTs were also supposed to double check that. I do know that this happened once or twice while I worked there (that I know of).
I was very lucky in the 5 1/2 years I worked there that it never happened to me. Maybe it was my triple-check system: I verified the dialyzer when I first set up the machine; when I and a colleague and/or pt signed off on it; and again right before I connected the venous blood line (at this point, you would still be fine if you caught it, although you would have to discard the blood in the lines).
If a pt was put on the wrong dialyzer, the pt was told; labs were drawn from the pts involved (including hepatitis and HIV). The dialyzer was of course discarded and a dry pack (or new reuse diayzer) used. None of the pts I know about refused to do reuse after that. None were infected or had any adverse effects from the incident (it was usually, but not always, caught right away). One reason the clinic used dry packs only for HIV pts* (however, ironically not for know HCV pts) was the risk of a mix-up and potential law suit from a pt put on the wrong dialyzer of an HIV pt.
For reuse, everyone needs to be very, very careful; of course, everyone is human, and we all know how turnover is... with time, it's probably inevitable that a mix-up will occur (however, if a staff member does this repeatedly... need I say more?!)
HTH.
DeLana
*Hep B pts were always dialyzed in isolation on dry packs and dedicated machines.