central venous pressure
Pressure measurement in the central venous system used to assess intravascular volume status and cardiac preload.
Full Definition
Central venous pressure (CVP) is measured via a central venous catheter placed in the superior or inferior vena cava, typically ranging from 2-8 mmHg in healthy individuals. In surgical critical care, CVP monitoring helps guide fluid management and assess cardiac function, though its reliability as a sole indicator of volume status is debated. Elevated CVP may indicate volume overload, right heart failure, or cardiac tamponade, while low CVP suggests hypovolemia.
Usage
Usage note: Often abbreviated as CVP; interpret in conjunction with other hemodynamic parameters rather than in isolation.
In Context
- "Central venous pressure remains elevated at 18 mmHg despite diuresis." — ICU assessment
- "Trending CVP values rather than absolute numbers provides better clinical guidance." — Medical education material