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Central line placement
The central venous pressure (CVP) is the pressure measured in the central veins close to the heart. It indicates mean right atrial pressure and is frequently used as an estimate of right ventricular preload.
The CVP catheter is an important tool used to assess right ventricular function and systemic fluid status.
What is a central venous catheter?
A central venous catheter, also called a central line, is a long, thin, flexible tube used to give medicines, fluids, nutrients, or blood products over a long period of time, usually several weeks or more.
Normal values are 5-10 mmHg
Factors affecting CVP
Factors that increase CVP include:
Decreased cardiac output
Mechanical ventilation and the application of positive end-expiratory pressure (PEEP)
Factors that decrease CVP include:
Indications for the use of central lines include
Monitoring of the central venous pressure (CVP) in acutely ill patients to quantify fluid balance
Long-term Intravenous antibiotics
Long-term Parenteral nutrition especially in chronically ill patients
Long-term pain medications
Drugs that are prone to cause phlebitis in peripheral veins (caustic), such as:
vasopressors (e.g. epinephrine, dopamine)
Peripheral blood stem cell collections
Frequent blood draws
Frequent or persistent requirement for intravenous access
Need for intravenous therapy when peripheral venous access is impossible
insertion see video