Question

Difficulty: HardPhysiological Adaptation

A practical nurse (PN) enters the room of a client receiving total parenteral nutrition (TPN) and discovers that the central venous catheter tubing has accidentally disconnected from the hub. The client is suddenly gasping for air, clutching their chest, and appears cyanotic. In what order should the PN perform the following actions? Arrange the actions in the correct sequence from first to last.

  1. 1Clamp the open lumen of the central venous catheter.
  2. 2Turn the client onto their left side with the head of the bed lowered.
  3. 3Administer high-flow supplemental oxygen via a non-rebreather mask.
  4. 4Collect a complete set of vital signs to report to the rapid response team.

Answer

The correct priority sequence is to first clamp the catheter, then position the client on their left side with the head lowered, followed by administering oxygen, and finally collecting vital signs.
In the event of a central venous catheter disconnection leading to an air embolism, the PN must follow strict prioritized steps. The very first action is to clamp the catheter to stop further air from being drawn into the venous system by negative intrathoracic pressure. Second, the client must be placed in the left lateral Trendelenburg position; this uses gravity to trap the air in the right atrium or right ventricle, preventing it from blocking the pulmonary artery. Third, high-flow oxygen is administered to combat the resulting severe hypoxia and help wash out nitrogen from the air bubble. Finally, once these immediate life-saving actions are complete, the PN collects a full set of vital signs to provide crucial hemodynamic data to the rapid response team and healthcare provider.

Step-by-Step Solution

1
Clamp the open lumen of the central venous catheter.
Further air entry is immediately halted.
The direct cause of the emergency (an open line into the central venous system) must be eliminated before any other intervention to prevent a larger, more lethal air embolism.
2
Turn the client onto their left side with the head of the bed lowered.
The air bubble is physically trapped.
The left lateral Trendelenburg position utilizes gravity to keep the air bubble in the apex of the right ventricle or atrium, preventing it from traveling into the pulmonary artery and causing a right ventricular outflow tract obstruction.
3
Administer high-flow supplemental oxygen via a non-rebreather mask.
Tissue hypoxia is treated.
The air embolism causes severe ventilation/perfusion mismatch and hypoxia; high-flow oxygen helps reverse the hypoxemia and may assist in resorbing the nitrogen gas bubble.
4
Collect a complete set of vital signs to report to the rapid response team.
Baseline data is gathered for the arriving team.
Hemodynamic status must be evaluated after initial life-saving measures to report to the registered nurse and emergency providers.

Key Concept

Emergency management of a suspected central line air embolism prioritizes immediately stopping air entry, then utilizing positional gravity to trap the air, followed by oxygenation and hemodynamic monitoring.
Estimated Time:1m 30s
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