I called the neurologist's office at Mission Children's Clinic so many times this morning that I actually got a personal phone call from him around lunch time today. Of course Harding was pushing his truck in circles around me while talking loudly and Shelby was fussing, so it was difficult to concentrate on the conversation. Here is what I got out of it:
Dr. Poplawski said that it is very common for a brain shunt to produce an irritation that can cause seizures. Shelby's EEG showed that her brainwaves are slower in her right temporal lobe where the shunt is (ask expected). That and the abnormal electrical discharges that the EEG picked up put Shelby at a high risk for seizures. He prescribed the Keppra for her as a preventative measure because the medication has no toxic effects, no interactions with other drugs, and has very few side effects.
We have an appointment with Dr. Poplawski on September 30th, plus we're on the waiting list if he gets any cancellations before then. In the mean time, I don't think we will move Shelby to her room upstairs any time in the near future.