In this issue of Critical Care Clinics, guest editor Dr. Hannah Wunsch brings her considerable expertise to the topic of History of Critical Care Medicine. The term "Critical Care Medicine� was first introduced in the 1950s at the University of Southern California-making 2023 the 70th anniversary of this subspecialty.� This issue provides a fascinating look at important aspects of the history of the field, which originated with the concept that immediately life-endangered patients, the critically ill and injured, may have substantially better chances of survival if provided with professionally advanced minute-to-minute objective measurements.