- Inotrope score > 20 x > 4 hrs [epinephrine: (mcg/kg/min) x 100 + norepinephrine: (mcg/kg/min) x 100 + phenylephrine: (mcg/kg/min) x 100 + vasopressin: (units/kg/hr) x 100 + milrinone: (mcg/kg/min) x 15 + dopamine: (mcg/kg/min) x 1 + dobutamine: (mcg/kg/min) x 1 + calcium chloride: (mg/kg/hr) x 1]