In PCA (patient-controlled analgesia) therapy, a running IV line delivers a flush with each dose. What is the purpose of this flush?

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Multiple Choice

In PCA (patient-controlled analgesia) therapy, a running IV line delivers a flush with each dose. What is the purpose of this flush?

Explanation:
In PCA therapy, the flush that accompanies each dose is used to push the medication all the way through the IV tubing into the patient, ensuring the full prescribed dose is delivered. The line has dead space, and without a flush some drug can remain in the tubing, leading to under-dosing. Flushing also helps keep the line clear so subsequent doses are administered promptly. It’s not about measuring flow rate or preventing infection; its main purpose is to guarantee the patient receives the complete dose prescribed.

In PCA therapy, the flush that accompanies each dose is used to push the medication all the way through the IV tubing into the patient, ensuring the full prescribed dose is delivered. The line has dead space, and without a flush some drug can remain in the tubing, leading to under-dosing. Flushing also helps keep the line clear so subsequent doses are administered promptly. It’s not about measuring flow rate or preventing infection; its main purpose is to guarantee the patient receives the complete dose prescribed.

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