The nurse is monitoring the Pulmonary Artery (PA) catheter and notes a central venous pressure reading of 15mmHg. The nurse anticipates administering the patient which medication?

Choice D rationale

To ensure the accuracy of the hemodynamic data from a radial arterial line, the nurse must reference and zero the system. Referencing involves positioning the transducer at the phlebostatic axis, which is the level of the atria at the fourth intercostal space, mid-axillary line. Zeroing the line negates the effects of atmospheric pressure on the monitoring system. This ensures that the pressure displayed on the monitor represents only the patient's internal physiological blood pressure, preventing false high or low readings.

Choice A rationale

Flushing the arterial line is done to maintain patency of the catheter and clear the tubing of blood after sampling. However, a continuous flush system usually handles this at a rate of 3 mL per hour. Manually flushing for 10 seconds is not a standard requirement prior to taking a reading and could potentially cause a fluid bolus or damage the artery if done with excessive force. It does not contribute to the calibration or accuracy of the electronic pressure transducer.

Choice B rationale

While positioning is important, the correct landmark for hemodynamic monitoring is the phlebostatic axis, not the sternal angle. The sternal angle, or Angle of Louis, is used as a landmark for identifying the second rib and auscultating heart sounds, but it does not correspond to the level of the heart's chambers for pressure monitoring. Using the incorrect reference point will lead to hydrostatic pressure errors, where every inch the transducer is below the heart adds approximately 2 mmHg to the reading.

Choice C rationale

The Allen test is a diagnostic physical exam used to assess the patency of the ulnar artery and the adequacy of collateral circulation to the hand. This must be performed before the arterial line is even inserted into the radial artery to ensure that the hand will remain perfused if the radial artery becomes occluded. Once the line is already in place, performing an Allen test is not a prerequisite for obtaining a routine pressure reading from the monitor.

Choice A rationale

When administering a medication via IV push, the nurse must move beyond the standard five rights to ensure patient safety. Right speed is vital because pushing too fast can cause speed shock or toxicity. Right dilution is essential as many concentrated medications are caustic to veins or require specific volumes to be effective. Right IV site ensures the catheter is patent and in a vein large enough to handle the drug without causing infiltration or local tissue necrosis.

Choice B rationale

While volume, patient history, and equipment are important components of general nursing care, they are not the specific supplemental "rights" traditionally taught for the technical execution of an IV push. Volume is usually inherent in the "right dose," and equipment is a prerequisite for any procedure. The safety focus of IV push specifically targets the immediate physiological impact of the drug entering the central circulation, which is why speed and dilution are much more critical technical considerations.

Choice C rationale

The manufacturer, temperature, and storage are related to pharmacy logistics and medication stability. While the nurse should ensure a medication is not expired and has been stored correctly, these are not the secondary rights checked during the actual bedside preparation and delivery of an IV push. These factors are considered earlier in the chain of medication administration. The clinical priority at the bedside focuses on how the drug is introduced to the patient's bloodstream and vascular integrity.

Choice D rationale

Identifying the nursing unit, physician, and pharmacy is more related to administrative and documentation tasks than the clinical safety of a medication bolus. The safety rights for IV push are designed to prevent immediate adverse reactions like cardiac arrest, respiratory depression, or vein damage. Checking the physician or pharmacy name does not protect the patient from the pharmacological effects of a drug delivered at the wrong rate or in an inappropriate concentration through a peripheral or central line.