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Zorluk: ZorReduction of Risk Potential

An intensive care nurse is monitoring a client who is receiving continuous total parenteral nutrition through a right subclavian central venous access device. While assessing the client, the nurse discovers that the intravenous tubing has completely disconnected from the catheter hub. The client is acutely restless, exhibiting perioral cyanosis, and auscultation reveals a loud, churning "mill-wheel" murmur over the precordium. The client's heart rate is 138138 beats per minute and blood pressure is 82/4682/46 mmHg. To mitigate the risk of a fatal physiological outcome, which sequence of actions must the nurse execute immediately?

  1. A
    Raise the head of the bed to a high-Fowler's position, apply a non-rebreather oxygen mask, and activate the rapid response team.
  2. Clamp the open catheter hub, turn the client to a left lateral Trendelenburg position, and administer 100%100\% oxygen.Cevap
  3. C
    Initiate a rapid bolus of isotonic intravenous fluids, obtain a 1212-lead electrocardiogram, and draw a sample for arterial blood gas analysis.
  4. D
    Instruct the client to bear down forcefully, cleanse the exposed catheter hub with chlorhexidine, and attach a new sterile tubing set.

Cevap

The nurse must first clamp the open catheter hub, turn the client to a left lateral Trendelenburg position, and administer 100%100\% oxygen.
The client's presentation of sudden respiratory distress, hypotension, and a "mill-wheel" murmur after a central venous catheter disconnection is the classic triad for a venous air embolism. The immediate nursing priority is to stop further air entry by clamping the catheter. Next, the client must be placed in a left lateral Trendelenburg position (Durant's maneuver). This specific positioning relies on gravity to keep the air bubble trapped in the apex of the right ventricle, preventing it from migrating into and occluding the pulmonary artery (which would cause fatal obstructive shock). Finally, administering 100%100\% oxygen promotes the diffusion and resorption of nitrogen gas from the embolus.

Adım Adım Çözüm

1
Identify the complication
The disconnected central line, sudden hypoxia, hypotension, and classic "mill-wheel" murmur indicate a severe venous air embolism.
Negative intrathoracic pressure has drawn room air directly into the central venous system.
2
Stop further air entry
The nurse immediately clamps the open catheter hub.
Preventing additional air from entering the venous circulation is the absolute most critical first action.
3
Position the client appropriately
The client is placed in the left lateral Trendelenburg position (Durant's maneuver).
This specific position traps the air bubble in the apex of the right ventricle, preventing it from migrating into the pulmonary artery and causing right ventricular outflow obstruction.
4
Improve oxygenation
100%100\% oxygen is administered.
High-concentration oxygen speeds up the diffusion and resorption of nitrogen gas, which makes up the majority of the air embolus.

Anahtar Kavram

Venous Air Embolism Management and Durant's Maneuver
Tahmini Süre:1m 30s
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Konular

Reduction of Risk Potential

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