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Difficulty: HardReduction of Risk Potential

A nurse is preparing to discontinue a non-tunneled central venous catheter (CVC) located in the right subclavian vein of a 68-year-old client who has completed a course of intravenous antibiotics for osteomyelitis. To strictly reduce the risk of a life-threatening physiological complication during this procedure, in what order should the nurse perform the following actions? Arrange the steps from first to last.

  1. 1Position the client in a flat, supine or Trendelenburg position.
  2. 2Remove the existing transparent dressing while stabilizing the catheter.
  3. 3Instruct the client to take a deep inhalation, hold it, and bear down.
  4. 4Withdraw the catheter completely in a swift, continuous motion.
  5. 5Apply immediate, firm pressure to the site with sterile gauze.

Answer

The correct sequence is to position the client flat, remove the dressing, instruct the Valsalva maneuver, withdraw the catheter, and immediately apply pressure.
Removing a central venous catheter carries a high risk of air embolism. The procedure must be precisely sequenced to maximize intrathoracic and central venous pressure before the catheter is withdrawn. Positioning the client flat or in Trendelenburg must occur first to raise central venous pressure. Only then should the nurse remove the dressing to prepare the site. Immediately before pulling the catheter, the client performs the Valsalva maneuver to further spike intrathoracic pressure. The catheter is then swiftly removed during this maneuver, followed by the immediate application of firm pressure to seal the tract.

Step-by-Step Solution

1
Position the client in a flat, supine or Trendelenburg position.
Central venous pressure is increased in the upper body.
This creates a positive pressure gradient that is the fundamental baseline requirement to reduce the risk of an air embolism.
2
Remove the existing transparent dressing while stabilizing the catheter.
The insertion site is safely exposed.
Performing this step after positioning ensures the client is already hemodynamically safe in the event of accidental catheter dislodgement during dressing removal.
3
Instruct the client to take a deep inhalation, hold it, and bear down.
Intrathoracic pressure is acutely elevated.
The Valsalva maneuver strictly prevents air entry into the venous system during the high-risk moment when the vein communicates with the atmosphere.
4
Withdraw the catheter completely in a swift, continuous motion.
The catheter is removed from the vascular space.
Swift removal during the Valsalva maneuver minimizes the duration the venous tract remains open.
5
Apply immediate firm pressure to the site with sterile gauze.
Hemostasis is achieved and air tracking is prevented.
Direct pressure physically blocks air from entering the venous tract and controls bleeding until an occlusive dressing is applied.

Key Concept

Central Venous Catheter Discontinuation and Air Embolism Prevention
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Topics

Reduction of Risk Potential

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