Approach to a patient with low systemic arterial blood pressure.




*Adrenal insufficiency, liver failure, post–cardiopulmonary bypass vasoplegia, and anaphylaxis are commonly listed as vasodilatory shock; however, data are inconclusive, and components of other types of shock (hypovolemic, cardiogenic) may also be present. BP, blood pressure; CO, cardiac output; IABP, intraaortic balloon pump; IV, intravenous; LV, left ventricle; MAP, mean arterial pressure; PE, pulmonary embolism; PTCA, percutaneous transluminal coronary angioplasty; RV, right ventricle; SVR, systemic vascular resistance.

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