In endotracheal suctioning, the nurse must always remember to?

SCTIMST Staff Nurse - 2015 (Set-B)

Medical & Surgical Nursing

Medium

Appeared in: SCTIMST Staff Nurse - 2015 (Set-B)

Explanation

The primary rationale for preoxygenation is to prevent hypoxemia, a common and dangerous complication of suctioning.
Suctioning removes oxygen along with secretions, and pre-loading the lungs with 100% oxygen provides a crucial safety margin.
This action helps prevent adverse events such as cardiac dysrhythmias, bradycardia (due to vagal stimulation), and severe oxygen desaturation.
Guidelines recommend hyperoxygenating the patient for at least 30 to 60 seconds before initiating suctioning.

Option B: While a propped-up (semi-Fowler's) position is generally recommended for ventilated patients to prevent aspiration and improve ventilation, it is not the most critical safety step immediately preceding the suctioning procedure itself. Preventing acute hypoxemia takes precedence.
Option C: Giving a Ryle's tube (RT) feed before suctioning is contraindicated. The procedure can induce coughing and gagging, which dramatically increases the risk of vomiting and aspirating gastric contents into the lungs.
Option D: Advancing the catheter until a cough is stimulated risks traumatizing the carina (the sensitive bifurcation of the trachea). This can cause bleeding, inflammation, and bronchospasm.

Clinical Relevance

Nursing practice connection: Knowing Safe Endotracheal Suctioning Technique helps nurses interpret findings accurately and avoid errors in routine assessment, medication administration, and patient teaching.
Failure to preoxygenate is a common cause of iatrogenic complications during suctioning, turning a routine procedure into a life-threatening event.
Nurses must be vigilant in monitoring the patient's vital signs (SpO2, HR, rhythm) before, during, and after suctioning. Any significant change (e.g., SpO2 drop below 90%, bradycardia) requires immediate cessation of the procedure and re-oxygenation.
What if? If a patient has a head injury, preoxygenation is even more critical. Hypoxemia can increase intracranial pressure (ICP), worsening the primary injury. Hyperoxygenation can help mitigate this risk.

How to Approach the Question

First, identify the core procedure in the question: endotracheal suctioning.
Recognize that the question asks for what the nurse 'must always' do, implying a critical safety step that is universally applicable.
Evaluate each option based on the principles of airway management and patient safety (Airway, Breathing, Circulation).
Option A directly addresses 'Breathing' by preventing hypoxemia, a direct and immediate risk of the procedure.
Eliminate options that are unsafe (giving a feed), less critical (positioning), or represent an incomplete or potentially harmful technique (inserting to cough reflex without pulling back).

Concept Tested & Keywords

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E6 Nursing Fundamentals Potter Perry 12e Part 5 pp. 16-18, 13-15