A 68-year-old client is receiving mechanical ventilation in the intensive care unit following a coronary artery bypass graft. The client's oxygen saturation drops to 89%, and auscultation reveals coarse crackles over the mainstem bronchi. The nurse prepares to perform open endotracheal suctioning. To reduce the risk of severe hypoxia and mucosal trauma, arrange the following procedural steps in the correct sequence.
- 1Hyperoxygenate the client with 100% oxygen for 1 to 2 minutes.
- 2Advance the suction catheter into the endotracheal tube without applying negative pressure.
- 3Withdraw the catheter 1 to 2 centimeters after meeting resistance or eliciting a cough.
- 4Apply intermittent suction while rotating and withdrawing the catheter over 10 to 15 seconds.
- 5Reassess the client's vital signs and lung sounds while providing post-suction hyperoxygenation.
Cevap
The correct sequence requires the nurse to first hyperoxygenate the client, safely advance the catheter without suction, reposition the tip to protect the carina, apply intermittent suction during withdrawal, and conclude with re-oxygenation and assessment.
Endotracheal suctioning carries significant physiological risks, including profound hypoxemia, cardiac dysrhythmias (often due to vagal stimulation), and mucosal trauma. Proper procedural sequencing mitigates these risks. The nurse must initially hyperoxygenate the client to establish a protective oxygen reserve. Next, the catheter is advanced without suction to avoid unnecessary oxygen depletion and mucosal stripping. Once resistance is met or a cough is stimulated (indicating the catheter has reached the carina), the nurse must pull the catheter back 1 to 2 centimeters to avoid applying direct suction to the sensitive carinal tissue. Suction is then applied intermittently while rotating the catheter during withdrawal, strictly limited to 10 to 15 seconds to prevent dangerous oxygen desaturation. Finally, the nurse provides post-suction hyperoxygenation and assesses the client's clinical response to ensure airway patency.
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Anahtar Kavram
To minimize complications such as hypoxemia, dysrhythmias, and mucosal trauma during endotracheal suctioning, strict adherence to evidence-based sequencing—including hyperoxygenation, suction-free insertion, carinal protection, and strict time limits on suction—is required.