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Zorluk: Çok zorPhysiological Adaptation

A nurse is removing a central venous access device (CVAD) from a client's right subclavian vein. During the procedure, the client suddenly gasps for air, becomes profoundly dyspneic, and exhibits perioral cyanosis. The client's blood pressure drops to 72/40 mm Hg, and a loud 'churning' murmur is auscultated over the precordium. Arrange the following emergency nursing interventions in the correct physiological sequence from first to last.

  1. 1Immediately apply direct pressure over the central line insertion site using a sterile, occlusive dressing.
  2. 2Place the client in a left lateral Trendelenburg position (Durant's maneuver).
  3. 3Administer high-flow 100% oxygen via a non-rebreather mask.
  4. 4Activate the rapid response system and notify the primary healthcare provider.
  5. 5Prepare the client for advanced hemodynamic support and potential echocardiography.

Cevap

The correct sequence is to first immediately seal the insertion site to prevent further air entry, then place the client in the left lateral Trendelenburg position to trap the embolus, followed by administering 100% oxygen to shrink the bubble, activating the rapid response team, and finally preparing for advanced interventions.
The correct sequence prioritizes immediate source control (sealing the site) to prevent further harm, followed immediately by anatomical positioning (left lateral Trendelenburg) to prevent the fatal migration of the air embolus into the pulmonary artery. Once the embolus is contained, high-flow oxygen is administered to treat hypoxemia and reduce the bubble's size. Finally, summoning advanced help and preparing for definitive diagnostic procedures completes the emergency response.

Adım Adım Çözüm

1
Seal the insertion site with an occlusive dressing.
Prevents further air entrainment into the central venous circulation.
Halting the source of the embolus is the primary step in resolving the crisis and preventing a larger, fatal air volume.
2
Position the client in the left lateral Trendelenburg position.
Traps the air bubble in the non-dependent apex of the right ventricle.
Prevents fatal obstructive shock caused by the air embolus migrating into the pulmonary artery.
3
Administer 100% oxygen via a non-rebreather mask.
Reverses hypoxemia and facilitates nitrogen washout.
High-concentration oxygen creates a gradient that shrinks the nitrogen-rich air embolus.
4
Activate the rapid response team.
Mobilizes advanced critical care providers.
Advanced pharmacological and mechanical interventions will be required to stabilize the client's hemodynamic status.
5
Prepare for advanced diagnostic and therapeutic interventions.
Facilitates definitive medical treatment.
Echocardiography or direct needle aspiration of the air from the heart may be necessary if conservative measures fail.

Anahtar Kavram

Venous Air Embolism Emergency Management
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