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.
Education Requirements for an RN. There are generally three educational approaches to becoming a RN. RNs usually train by completing a bachelor's or associate's degree program in nursing. Less commonly, RNs prepare for the occupation by earning a diploma in nursing.