Radiologic Technologists encounter patients with a wide variety of medical conditions, as well as severity ranging from mild to critical, on a daily basis. A technologist working with an Emergency Room patient involved in an extensive motor-vehicle accident (MVA) understands the potential for the development of shock. However, many situations involving a medical emergency occur in far less serious patients. Hives may result from the injection of contrast media. An out-patient with a history of diabetes mellitus may develop insulin shock related to fasting for the imaging procedure. A Radiologic Technologist with a solid understanding of the many medical emergencies that may occur during the care of patients is prepared to provide a quick, accurate response. The response to an acute, life-threatening situation does affect the patientís outcome.