WHAT IS AN ARTERIAL LINE?

What is an arterial line?
An Arterial line is a pressure line which is inserted into the artery. Typically, the radial at the wrist is used. The brachial artery at the inside of the elbow joint or the femoral in the groin area may also be used.

What are some of the uses of the arterial line?
Uses of the line include:
- Constant blood pressure monitoring
- Lab values can be done without always sticking the patient

Helpful Hints:
- Monitor tracing, per protocol

- Check site for any disconnection or hematoma formation
- Change and date tubing, per protocol, to prevent infection

How is the phlebostatic axis used?
The phlebostatic axis is used as a reference point when zeroing pressure lines. CVP, PA, and arterial lines are usually zeroed daily or per ICU protocol. The new nurse should familiarize herself with this landmark.

More Helpful Hints:
- Check pressure bag to ensure enough fluid
- Date and time tubing; change per hospital's protocol


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