The VA CPICU is a combined service that serves both medical intensive care patients and cardiology patients who require intensive care. At the VA there are two separate units called "ICU" and "CCU" respectively, but this is simply a historic/geographic distinction. Patients admitted to the CPICU service are admitted to the ICU or CCU unit depending on nursing staff availability, at the discretion of the one charge nurse who oversees the two units. Therefore, it is not uncommon for a cardiology patient to be admitted to the "ICU", and vice-versa.