That was the PF's survey, Julija. Results here: http://preeclampsia.org/component/lyfte ... your-brain
There is clearly cognitive change in the mother following any birth. It's difficult to separate out what effects from preeclampsia there might be. A survey like this provides us with an excuse to do a more careful analysis, and there are people working on that.
Grief is also a definite confounder.
I haven't noticed any effect in my recall that I don't see mirrored in the rest of the women in my family who've had children - which is to say that now, I can run through three or four names of a thing or a person before hitting on the one I want, if there's a noisy background capturing some of my attention. And since, as a kid, I answered to "Laurie... Annie... Mickie... damnit... CARYN." I'm pretty sure that's not unique to preeclampsia.