My mom had 2 grand mal seizures and had to be in an ICU for 3 days. Is it common for my mom to lose a lot of mental skills?

It is very common for elderly to decline when in the. ICU or even hospitalized. Until she is back in her familiar enviroment it is difficult to say if the decline is permanent. It is also true that there can be some damage with seizures that will affect function. But I am not familiar with seizures being common in Alzheimer's. I hope they have done testing to rule out any other problem.