1. at receptor antagonists D (3) Shock 口 cardiac output↑; d redistribution of blood flow. D shift of fluid from interstitial compartment to vascular compartment; 口 pulmonary pressure↓; u fully adequate replacement of intravascular fluid(3) Shock cardiac output ; redistribution of blood flow; shift of fluid from interstitial compartment to vascular compartment; pulmonary pressure ; fully adequate replacement of intravascular fluid 1.  receptor antagonists