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Difficulty: MediumPharmacological and Parenteral Therapies

A nurse is caring for a client with community-acquired pneumonia who has a continuous primary intravenous (IV) infusion of 0.9% sodium chloride running at 75 mL/hr. The healthcare provider prescribes an intermittent dose of IV ceftriaxone to infuse over 30 minutes. Arrange the following steps in the correct order for safely setting up and initiating the secondary infusion using a gravity drip system.

  1. 1Verify the compatibility of the IV ceftriaxone with the continuous primary infusion of 0.9% sodium chloride.
  2. 2Spike the ceftriaxone bag and prime the secondary intravenous tubing.
  3. 3Scrub the needleless access port on the primary tubing located above the roller clamp.
  4. 4Connect the secondary tubing to the primary line and hang the primary fluid bag lower than the ceftriaxone bag.
  5. 5Open the secondary roller clamp and adjust the flow rate to the prescribed drops per minute.

Answer

The correct sequence begins with verifying fluid compatibility, followed by priming the secondary tubing, scrubbing the primary line access port, connecting the tubing and lowering the primary bag, and finally regulating the drip rate.
Safe administration of a secondary IV piggyback medication via a gravity system requires a logical sequence that prevents patient harm. Verification of fluid compatibility is the absolute first step. Next, the secondary tubing is primed with the medication to prevent air embolism. Infection control follows, requiring the nurse to vigorously scrub the upper needleless access port before any connection is made. Connecting the tubing and utilizing an extension hook to lower the primary bag utilizes gravity to prioritize the secondary infusion over the primary fluid. Finally, regulating the drip rate ensures accurate and safe dosing over the prescribed time frame.

Step-by-Step Solution

1
Verify the compatibility of the IV ceftriaxone with the continuous primary infusion of 0.9% sodium chloride.
The nurse confirms that the two fluids will not precipitate or interact adversely.
Safety must be established first; incompatible fluids can cause crystallization in the IV line, leading to a blocked catheter or embolus.
2
Spike the ceftriaxone bag and prime the secondary intravenous tubing.
The secondary IV line is filled with medication and is completely free of air bubbles.
Air must be purged from the secondary tubing before attaching it to the primary system to prevent a life-threatening air embolism.
3
Scrub the needleless access port on the primary tubing located above the roller clamp.
The access port is properly disinfected.
Vigorous scrubbing with an antimicrobial swab maintains infection control and prevents the introduction of microorganisms into the patient's circulatory system.
4
Connect the secondary tubing to the primary line and hang the primary fluid bag lower than the ceftriaxone bag.
The secondary line is successfully integrated, and a proper gravity gradient is established.
In a gravity drip system, the secondary bag must be hung physically higher than the primary bag so hydrostatic pressure allows the secondary medication to infuse first.
5
Open the secondary roller clamp and adjust the flow rate to the prescribed drops per minute.
The secondary medication begins infusing at the correct therapeutic speed.
Proper flow rate regulation ensures the patient receives the antibiotic safely over the prescribed 30 minutes without causing speed shock or fluid overload.

Key Concept

The correct procedural sequence for administering a secondary IV piggyback (IVPB) infusion prioritizes chemical compatibility, stringent infection control, and the physical principles of hydrostatic pressure in a gravity system.
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Topics

Pharmacological and Parenteral Therapies

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