Efferent arterioles in glomerular haemodynamics.
In haemorrhagic rats norepinephrine normalises BP but maintains renal cortical pressures at low levels. Dopamine, however, can normalise both BP and renal cortical pressures. Dopamine is therefore useful in treating haemorrhagic hypotension in addition to or while awaiting blood transfusion. The efferent arteriole in superficial nephrons is a passive resistance in glomerular haemodynamics.
D000818:Animals; D001158:Arteries; D001794:Blood Pressure / Q000187:drug effects; D001834:Body Water; D002196:Capillaries / Q000187:drug effects; D004298:Dopamine / Q000494:pharmacology; D004837:Epinephrine / Q000494:pharmacology; D006439:Hemodynamics / Q000187:drug effects; D006470:Hemorrhage / Q000503:physiopathology; D007022:Hypotension / Q000503:physiopathology; D007678:Kidney Glomerulus / Q000098:blood supply* / Q000503:physiopathology; D009638:Norepinephrine / Q000494:pharmacology; D051381:Rats
D004298:Dopamine; D009638:Norepinephrine; D004837:Epinephrine