Rationale:

Step 1: Divide the total volume of fluid (2000 ml) by the total time in hours (24 hours). Step 2: Perform the calculation: 2000 ml ÷ 24 hours = 83.33 ml/hour.

Step 3: Round the answer to the nearest whole number, as fluid administration is typically measured in whole milliliters.

The correct answer is 83 ml/hour.

Choice A rationale:
While verifying the suitability of the solution for a central line is important, it is not the immediate next step after insertion. Solutions that are incompatible with central lines can cause damage to the catheter or precipitate in the bloodstream, leading to serious complications. However, confirming placement takes priority to ensure the line is correctly positioned before any infusion is initiated.
Choice B rationale:
Double-checking medication calculations is a crucial safety measure, but it is not the most urgent step after central line insertion. Medication administration can only occur after confirming proper placement to avoid unintended infusion into incorrect sites or tissues, potentially leading to tissue damage or ineffective treatment.
Choice D rationale:
Initiating the prescribed infusion via the new access is the desired outcome, but it cannot be done before confirming placement. Infusing medications or fluids through a misplaced line can have severe consequences, such as:
Infiltration of medications into surrounding tissues, causing inflammation, pain, and potential necrosis.
Administration of medications into unintended areas, such as the pleural space or the vasculature of the head and neck, leading to potentially life-threatening complications.
Delay in the delivery of necessary medications or fluids if the line is not positioned correctly within the central venous system.
Choice C rationale:
Confirming placement with an x-ray is the essential next step to ensure the central line is in the correct position within the central venous system. This verification is crucial for several reasons:
Prevention of complications: Misplaced central lines can cause serious complications, such as pneumothorax (collapsed lung), hemothorax (blood in the pleural space), arrhythmias (irregular heartbeats), and nerve damage.
Accurate medication and fluid delivery: Proper placement ensures that medications and fluids are delivered directly into the central circulation, allowing for rapid and effective distribution throughout the body.
Safe and effective infusion: X-ray confirmation provides visual evidence of the line's position, guiding subsequent infusion practices and reducing the risk of errors.
Early identification of malposition: If the x-ray reveals a misplaced line, adjustments can be made promptly to prevent potential complications and ensure appropriate infusion.