In collaboration with the registered nurse, the CA is responsible for obtaining vital signs including oxygen saturation measurements, measuring intake and output, performing EKGs, and obtaining and labeling laboratory specimens; all while identifying and reporting unusual findings or changes in patient condition to the registered nurse. The Hematopoietic (Stem) Cell Transplant Program at Dana-Farber/Boston Children's Cancer and Blood Disorders Center is one of the largest and most experienced pediatric stem cell transplant programs in the world.