A hematoma is a larger collection of blood, usually caused by surgery, injury, or a greater trauma. Hematomas will usually reabsorb into the body, like a bruise. However, depending on the size, location and cause of the hematoma, the area may need to be drained surgically, or take a longer period of time to resolve.
Registered nurse. A Registered Nurse (RN) is a nurse who has graduated from a nursing program and met the requirements outlined by a country, state, province or similar licensing body in order to obtain a nursing license. An RN's scope of practice is determined by legislation, and is regulated by a professional body or council.
community health nurse an especially prepared registered nurse whose work combines elements of both primary care nursing and public health practice and takes place primarily outside the therapeutic institution.egistered nurse (RN), 1 (U.S.) a nurse who has completed a course of study at a state-approved school of nursing and passed the National Council Licensure Examination. A registered nurse may use the initials RN after the signature. RNs are licensed to practice by individual states.