vasopressor
A medication that causes vasoconstriction to increase blood pressure and improve organ perfusion in critically ill patients.
Full Definition
Vasopressors are pharmacological agents used in surgical critical care to maintain adequate blood pressure and organ perfusion when patients experience distributive shock or severe hypotension. Common examples include norepinephrine, epinephrine, and vasopressin. These medications are typically administered through central venous access due to their potent effects and potential for tissue necrosis if extravasated. Proper dosing and monitoring are essential as excessive vasoconstriction can compromise peripheral circulation.
Usage
Usage note: Often confused with inotropes, which primarily affect cardiac contractility rather than vascular tone.
In Context
- "The patient required high-dose vasopressor support to maintain a mean arterial pressure above 65 mmHg." — ICU progress note
- "Titrate vasopressor doses based on hemodynamic parameters and urine output." — Nursing protocol