In this issue of Critical Care Clinics, guest editors Drs. Guillermo E. Umpierrez and Andrew Demidowich bring their considerable expertise to the topic of Metabolic Emergencies in Critical Care. Top experts discuss key topics such as management of diabetes and hyperglycemia in the intensive care unit; diabetes technology in the ICU: current applications and future directions; calcium and bone metabolism: severe hypercalcemia and hypocalcemia in the ICU; and many more.