A nurse is caring for an infant who has coarctation of the aorta.
Which of the following should the nurse identify as an expected finding?

The correct answer is D.

Choice A reason: “A. Using this machine increases my risk of overdose.” This statement is incorrect because PCA pumps are designed with safety mechanisms to prevent overdose. The pump is programmed to deliver a specific dose of medication at set intervals, and it will not dispense more medication than what is prescribed by the healthcare provider.

Choice B reason: “B. I can get pain medication any time as long as I press the button.” While it is true that the patient can self-administer medication, PCA pumps have a lockout interval that prevents the machine from delivering another dose until a certain amount of time has passed, ensuring that the patient cannot receive medication too frequently.

Choice C reason: “C. My partner can press my pain medication button for me if I am sleeping.” This statement is incorrect. Only the patient should press the button on the PCA pump to ensure that the medication is administered safely and according to the patient’s current level of pain. Allowing someone else to press the button could lead to unsafe dosing.

Choice D reason: “D. I will receive a limited amount of pain medication when I press the button.” This is the correct statement. The PCA pump allows the patient to administer a controlled amount of pain medication within safe limits set by the healthcare provider. The pump is programmed to deliver a specific dose of medication, and there is a limit to the number of doses that can be administered per hour.

Choice A rationale:

A client who received a Mantoux test 48 hr ago and has an induration does not require immediate follow-up care. An induration at the injection site indicates a positive reaction, but further evaluation and management are necessary, not urgent.

Choice B rationale:

A client taking warfarin with an INR of 1.8 requires follow-up care. The normal range for INR in a client taking warfarin is usually 2.0 to 3.0. An INR of 1.8 suggests inadequate anticoagulation, putting the client at risk of thromboembolic events. Dose adjustment or other interventions are needed to bring the INR within the therapeutic range.

Choice C rationale:

A client scheduled for a colonoscopy and taking sodium phosphate does not necessarily require immediate follow-up care. However, sodium phosphate can cause electrolyte imbalances, so monitoring for any signs of electrolyte disturbances is essential, but it does not mandate urgent intervention.

Choice D rationale:

A client taking bumetanide with a potassium level of 3.6 mEq/L requires follow-up care. The normal range for potassium is typically 3.5 to 5.0 mEq/L. A potassium level below the normal range (hypokalemia) can lead to cardiac arrhythmias and muscle weakness. The client may need potassium supplements or dietary adjustments to correct the imbalance.