448: INCREASED RISK OF HOSPITAL MORTALITY ASSOCIATED WITH ICU READMISSION IN INITIALLY LOW-RISK PATIENTS. (January 2018) - Dieffenderfer, Brian; Zwir, Igor; Iqbal, Ayesha; Konzen, Lisa; Kerby, Paul; Buckman, Sara; Despotovic, Vladimir; Palmer, Christopher; White, Jason; King, C. Ryan; Hoehner, Christine; Boyle, Walter