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.
RN vs BSN. RN is a Registered Nurse, and is a health care specialist who uses her learned nursing practices and processes to take care of an ailing person. A Registered Nurse is trained and qualified to treat patients. The Associate degree is two years, but on the other hand, the Bachelors degree takes four years.