Unfortunately, when nurses sit at the table with rehab staff, pharmacists, physicians, administrators, etc. we are often the least educated. What a shame, as nurses spend the most time with patients. If we want to be part of the team that not just provides the bedside care, but also makes big decisions on how healthcare businesses are run, conducting research, how policies and legislation are written, and how future health professionals are educated, we have to strive to match the educational background of those with which we work side by side.
NO class that I've taken has been a waste of time. Micro, pathophys, chem, etc. all come into play. While I don't use (or even remember) the knowledge from these classes on a daily basis, it helps me have the background knowledge to understand research papers or understand what a physician or pharmacist is talking about.