Source:http://linkedlifedata.com/resource/umls/id/C0183220
UMD: Prefabricated self-standing columns that are designed to organize the utility services (e.g., electrical, gas, vacuum) and devices at the head of the patient's bed. These columns are usually factory-made, pre-wired and pre-piped; designed and manufactured from a standard system of components. Most service columns have a rectangular cross-section; they eliminate the need for individual installation of services and afford nearly 360-degree access to the patient. A typical column includes: oxygen, air, and vacuum station outlets; electrical power receptacles; provision for nurse call and code buttons; telephone jacks; physiologic monitor support brackets; and various types of lighting (ambient, reading, exam, night-light).