The definition of refractory shock or<unk>  varies. In 2018, the American College of Chest Physician stated that it is presents if there is an inadequate response to high-dose vasopressor therapy defined as ≥ 0.5 mg/kg/min norepinephrine-equivalent dose. Drug Dose Norepiniphrine equivalent Epinephrine 0.1 μg/Kg/min 0.1 μg/Kg/min Dopamine 15 μg/Kg/min 0.1 μg/Kg/min Norepinephrine 0.1 μg/Kg/min 0.1 μg/Kg/min Phenylephrine 1 μg/Kg/min 0.1 μg/Kg/min Vasopressin 0.04 U/Kg/min 0.1 μg/Kg/min
Vasodilatory shock
Obstructive shock
Distributive shock
Hypovolemic shock
Cryptic shock
Neurogenic shock
Spinal shock
Septic shock