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.
nurse practitioner an advanced practice nurse trained in assessment of the physical and psychosocial health-illness status of individuals, families, or groups in a variety of settings through health and development history taking and physical examination.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.