Abstract
To determine whether the beneficial effects of catecholamines on the variables of hemorrhagic hypovolemic shock are augmented by coadministration of alpha1-acid glycoprotein during resuscitation, alpha1-acid glycoprotein (200 mg/kg), a placebo formulation or Ringer's solution was infused in a rat model of hemorrhagic hypovolemic shock for 1 h concomitantly with either norepinephrine (CAS 51-40-1; 0.1, 0.3, 1 microg x kg(-1) x min(-1)) or dopamine (CAS 62-31-7; 5, 10, 15 microg x kg(-1) x min(-1)). Resuscitation with norepinephrine or dopamine alone was continued for a further 4 h. Mean arterial blood pressure, cardiac output, stroke volume, heart rate and total peripheral vascular resistance were measured during the entire 5-h period. The combination of dopamine or norepinephrine with alpha1-acid glycoprotein more effectively restored mean arterial blood pressure and cardiac output than analogous combinations with placebo formulation or Ringer's solution. So co-administration with alpha1-acid glycoprotein considerably augments the beneficial effects of catecholamines on the main variables of hemorrhagic hypovolemic shock.
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