Abstract
The utilization of ambulances in Yokohama city, Japan is projected to increase rapidly with the advance of aging in the society. Ambulance use caused by diseases of cardiovascular system (DCS) is also increasing. The increasing demand of emergency medicine on DSC may affect the regional emergency medical system because emergency medicine for DSC often requires special knowledge and techniques. This study predicts that the demand of emergency medicine for DSC in Yokohama will be 1.4 times in 2015 and 1.7 times in 2030 that of the demand in 2001.Futher research is necessary to develop appropriate systems that can efficiently cope with the rapid increase of the demand for emergency medicine.