To my progressive care nursing colleagues around the world whose wonderful work and efforts ensure the safe passage of patients through the progressive care environment. Special thanks to Marianne Chulay, RN, PhD, FAAN, my dear friend and colleague, for her many contributions and mentoring during the development of the first two editions of the Essentials of Critical Care Nursing and the Essentials of Progressive Care Nursing books. Her inspiration, drive, and thoughtful approach to the books continue to be an inspiration to me and the authors with whom she worked.