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

question 14

Multiple Choice

Following insertion of a pulmonary artery catheter ( PAC ) ,the physician orders the nurse to 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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