Source:http://linkedlifedata.com/resource/umls/id/C0181131
UMD: Prefabricated surface mounted or wall-recessed units used to organize the utility services (e.g., electrical, gas, vacuum) and devices at the head of the patient's bed. These systems may be either frame-type or cabinet type, they are factory pre-wired and pre-piped; and usually designed and manufactured from a standard system of components. Frame type headwalls used metallic (e.g., steel) frame members to form the structural frame, the rear of the unit open; while cabinet-type headwalls use modules much like steel cabinets with integral back panels.. A typical headwall system includes:oxygen, air, and vacuum station outlets; electrical power receptacles; provision for nurse call and code buttons; telephone jacks; physiological monitor support brackets; and various types of lighting (ambient, reading, examination, night-light).