Definitions for vasopressorˈvæs oʊˌprɛs ər, ˈveɪ zoʊ-
This page provides all possible meanings and translations of the word vasopressor
Random House Webster's College Dictionary
vas•o•pres•sorˈvæs oʊˌprɛs ər, ˈveɪ zoʊ-(n.)
any hormone or drug that acts as a vasoconstrictor and increases blood pressure and heart rate.
Category: Biochemistry, Pharmacology
any agent that produces vasoconstriction and a rise in blood pressure (usually understood as increased arterial pressure)
an agent that causes such constriction
Of or relating to the constriction on blood vessels which eventually causes a rise in blood pressure
A vasopressor agent is any medication that tends to raise reduced blood pressure. Some antihypotensive drugs act as vasoconstrictors to increase total peripheral resistance, other sensitize adrenoreceptors to catecholamines - glucocorticoids, and the third class increase cardiac output - dopamine, dobutamine. If hypotension is due to loss of blood, then preparations increasing volume of blood circulation—plasma-substituting solutions such as colloid and crystalloid solutions —will raise the blood pressure without any direct vasopressor activity. Packed RBCs, plasma or whole blood should not be used solely for volume expansion or to increase oncotic pressure of circulating blood. Blood products should only be used if reduced oxygen carrying capacity or coagulopathy is present. Other causes of either absolute or relative vascular volume depletion also respond, although blood products are only indicated if significantly anemic.
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