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Zorluk: ZorPhysiological Adaptation

A nurse is caring for a client with acute respiratory distress syndrome (ARDS) who is receiving mechanical ventilation with a positive end-expiratory pressure (PEEP) of 15 cm H2O15 \text{ cm H}_2\text{O}. Suddenly, the ventilator's high-pressure alarm activates. The nurse observes that the client's blood pressure has decreased from 122/76 mm Hg122/76 \text{ mm Hg} to 82/48 mm Hg82/48 \text{ mm Hg}, heart rate has increased from 94 /min94 \text{ /min} to 138 /min138 \text{ /min}, and oxygen saturation has dropped to 86%86\%. Which action is the nurse's priority?

  1. A
    Perform immediate in-line endotracheal suctioning to clear airway secretions.
  2. B
    Administer a rapid intravenous fluid bolus to address the severe hypotension.
  3. Auscultate bilateral breath sounds and evaluate for tracheal deviation.Cevap
  4. D
    Place the client in a supine position with the lower extremities elevated.

Cevap

The correct action is to auscultate bilateral breath sounds and evaluate for tracheal deviation.
The client's presentation—a high-pressure ventilator alarm, sudden profound hypotension, tachycardia, and worsening hypoxemia—strongly suggests barotrauma resulting in a tension pneumothorax. High PEEP increases the risk of alveolar rupture. Leaked air becomes trapped in the pleural space, continuously increasing intrathoracic pressure. This pressure collapses the affected lung and compresses the vena cava, reducing venous return and causing obstructive shock. The nurse must prioritize immediate clinical assessment of breath sounds (which would be diminished or absent on the affected side) and tracheal alignment (deviated away from the affected side) to confirm the diagnosis and prepare for life-saving needle decompression.

Adım Adım Çözüm

1
Analyze the clinical presentation and ventilator alarms.
The combination of a high-pressure alarm, sudden hypotension, tachycardia, and hypoxemia in a client on high PEEP is identified.
High PEEP increases the risk of alveolar rupture (barotrauma), which can lead to air trapping in the pleural space.
2
Determine the underlying pathophysiological cause.
The acute hemodynamic deterioration indicates obstructive shock caused by a tension pneumothorax.
Trapped pleural air increases intrathoracic pressure, collapsing the lung and compressing the heart and major vessels, drastically reducing cardiac output.
3
Prioritize the immediate nursing intervention.
Physical assessment of breath sounds and tracheal alignment is selected as the priority.
Immediate clinical confirmation is required to initiate life-saving interventions such as needle thoracostomy.

Anahtar Kavram

Recognition and initial assessment of tension pneumothorax as a complication of positive pressure ventilation.
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Konular

Physiological Adaptation

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