Following Insertion of a Pulmonary Artery Catheter ( PAC ),The

question 23

Multiple Choice

Following insertion of a pulmonary artery catheter ( PAC ) ,the provider requests the nurse obtain a blood sample for mixed venous oxygen saturation ( SvO₂ ) .Which action by the nurse best ensures the obtained value is accurate?

• A) Zero referencing the transducer at the level of the phlebostatic axis following insertion
• B) Calibrating the system with a central venous blood sample and arterial blood gas value
• C) Ensuring patency of the catheter using a 0.9% normal saline solution pressurized at 300 mm Hg
• D) Using noncompliant pressure tubing that is no longer than 36 to 48 inches and has minimal stopcocks

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Definitions:

Directional Tires

A tire whose tread pattern requires it to be used to rotate mainly in one direction, meaning that right- and left-side tires are not interchangeable.

Symmetrical

Characterized by or exhibiting symmetry; where a structure has a balanced and proportionate arrangement on either side of a dividing line or plane.

Asymmetrical

Having parts that do not mirror each other or are not symmetrical, an attribute often found in design, layout, or certain components.

Radial Runout

The variation or inconsistency of a rotating part's surface in the radial direction, affecting the smoothness and balance of rotation.