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.
A Nurse Practitioner (NP) is a registered nurse (RN) with advanced training in diagnosing and treating illness. Nurse Practitioners prescribe medications, treat illness, and administer physical exams. NPs differ from physicians in that they focus on prevention, wellness, and education. NPs specialize in providing all encompassing individualized care. Most NPs specialize in particular areas of health care.