vasopressor
Pronunciation: VAY-zo-PRESS-or
Medications that increase blood pressure by constricting blood vessels, used in cardiac emergencies with shock or hypotension.
Full Definition
Vasopressors are a class of medications that increase blood pressure primarily through vasoconstriction of peripheral blood vessels. In emergency cardiology, these agents are crucial for managing cardiogenic shock, post-cardiac arrest hypotension, and other forms of distributive shock that may complicate cardiac emergencies. Common vasopressors include norepinephrine, epinephrine, dopamine, and phenylephrine, each with different receptor profiles and clinical applications. These medications require continuous intravenous infusion with careful titration based on hemodynamic parameters and are typically administered through central venous access due to their potential for tissue necrosis if extravasation occurs.
Usage
Usage note: Distinguish from inotropes, which primarily increase contractility; note specific agent and dosing.
In Context
- "Norepinephrine was started as the primary vasopressor for cardiogenic shock." — ICU medication management
- "The patient required escalating vasopressor support despite optimal fluid resuscitation." — Critical care progress note