<qa>  What is the purpose of the intent-to-treat analysis?The study drugs will be kept in appropriately secure areas in the labor and delivery suite of each site. This system will allow for the most efficient administration of drug after randomization and will limit the rate of drop out because of seizure prior to getting the intended drug. In this intent-to-treat analysis, each patient will be analyzed in the group she was originally assigned to regardless of whether or not she received the drug or not. 