A cart designed to accommodate equipment necessary to measure metabolic energy expenditure. This may also include cardiovascular and respiratory function measurements when the patient is at rest and/or during exercise. This trolley (cart) will typically hold devices such as oxygen (O2) and carbon dioxide (CO2) analysers, airflow measurement devices, controls and a computer system that processes the measurements and provides the required information. It will typically be used to assess the status of patients in the intensive care unit (ICU), burn treatment unit, and accident and emergency (A&E) unit.