Defining Shock and Preshock for Mortality Risk Stratification in Cardiac Intensive Care Unit Patients

Correspondence to: Jacob C. Jentzer, MD, Department of Cardiovascular Medicine and Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Mayo Clinic, 200 First St SW, Rochester, MN 55905. Email

E-mail Address: [email protected]

Department of Cardiovascular Medicine (J.C.J., J.M., D.R.H., M.R.B., G.W.B., C.S.R.), Mayo Clinic, Rochester, MN.

Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine (J.C.J., B.B.), Mayo Clinic, Rochester, MN.