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Difficulty: MediumReduction of Risk Potential

A nurse is preparing to remove a client's non-tunneled percutaneous central venous catheter (CVC). To minimize the risk of an air embolism, in what order should the nurse perform the following actions? Arrange the steps in the correct sequence from first to last.

  1. 1Place the client in a supine or Trendelenburg position.
  2. 2Instruct the client to take a deep breath and bear down.
  3. 3Remove the catheter smoothly and continuously.
  4. 4Apply direct manual pressure to the site with sterile gauze.
  5. 5Apply an airtight occlusive dressing over the site.

Answer

The correct sequence for removing a central venous catheter to prevent air embolism is to first position the client supine, then instruct them to perform the Valsalva maneuver, remove the catheter smoothly, apply immediate direct pressure, and finally secure an occlusive dressing.
Preventing an air embolism during CVC removal requires manipulating pressure gradients. Supine positioning and the Valsalva maneuver increase central venous pressure above atmospheric pressure. Swift removal limits exposure time, followed immediately by pressure and an occlusive dressing to seal the tract.

Step-by-Step Solution

1
Place the client in a supine or Trendelenburg position.
Intrathoracic venous pressure is increased.
Lowering the head of the bed utilizes gravity to increase venous pressure above atmospheric pressure, reducing the risk of air being sucked into the central circulation.
2
Instruct the client to take a deep breath and bear down.
The client performs the Valsalva maneuver.
This maneuver further raises intrathoracic pressure precisely at the moment the vein will be exposed, creating a positive pressure gradient that pushes blood out rather than pulling air in.
3
Remove the catheter smoothly and continuously.
The catheter is extracted without tissue trauma.
A swift, continuous motion limits the duration the venous pathway is open to the atmosphere.
4
Apply direct manual pressure to the site with sterile gauze.
Hemostasis begins and the entry tract is physically blocked.
Firm pressure for 5 to 10 minutes stops bleeding and prevents air aspiration while a stable clot forms.
5
Apply an airtight occlusive dressing over the site.
The insertion site is completely sealed.
An occlusive dressing prevents any delayed air entry into the tract over the next 24 to 72 hours.

Key Concept

Central Venous Catheter Removal and Air Embolism Prevention
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Topics

Reduction of Risk Potential

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