Registered nurses hold the highest nursing position in nursing homes, as they oversee the activities of the rest of the nursing staff. Instead of just focusing on the immediate needs of patients, RNs are responsible for overseeing each patient’s overall health and medical histories. By taking a patient’s entire history into account, the RN can ensure that each individual receives the best care possible. In addition to the basic duties performed by nursing assistants and LPNs, RNs are also responsible for advanced activities such as starting intravenous infusions, administering oxygen, monitoring blood sugar levels and consulting with the supervising physicians.