A patient is receiving oxygen therapy via a mechanical ventilator. The nurse assesses the patient's respiratory status and considers the need for suctioning. Which of the following indicates the need for suctioning?

Appeared in: NORCET 6 Prelims -2024

Explanation

A drop in oxygen saturation (SpO₂) is a critical sign of hypoxia, indicating that gas exchange is impaired.
In a mechanically ventilated patient, this is frequently caused by secretions accumulating in the endotracheal tube or airways, creating an obstruction.
Suctioning is the intervention required to physically remove these secretions, restore airway patency, and thereby improve oxygenation.
Patient assessment, rather than a fixed schedule, determines the need for suctioning.

Option A: Normal air entry on auscultation indicates that the airways are clear and air is moving freely. This is a sign of a patent airway, not an obstructed one.
Option B: An effective cough is the body's natural and most efficient way to clear secretions. If a patient can cough effectively, they do not need invasive suctioning.
Option D: A normal respiratory rate is a sign of respiratory stability. It does not indicate the distress or airway obstruction that would necessitate suctioning.

Visual 1: Flowchart: Decision-making process for endotracheal suctioning, showing assessment triggers (e.g., low SpO2, adventitious sounds, high ventilator pressures) leading to the intervention.
Visual 2: Infographic: 'Signs You Need to Suction,' visually comparing signs of a clear airway (normal vitals, clear breath sounds) with signs of obstruction (low SpO2, gurgling, high vent pressures).

Clinical Relevance

Nursing practice connection: Use the key finding related to Indications for Endotracheal Suctioning to guide bedside assessment, documentation, and the next nursing action.
Suctioning is not a benign or routine procedure; it must be based on a thorough patient assessment to avoid complications like hypoxia, tracheal trauma, bronchospasm, and infection.
Over-suctioning can be harmful. Always assess the patient first to confirm the need, and hyper-oxygenate before and after the procedure as per facility protocol to minimize hypoxic events.
What if? If the patient had coarse crackles (rhonchi) on auscultation but their oxygen saturation was still normal (e.g., 95%), the nurse should still prepare to suction. The rhonchi are an early sign of secretion buildup that will likely lead to desaturation if not addressed.

How to Approach the Question

First, identify the core of the question: What is a positive sign that a ventilated patient needs suctioning?
Understand that suctioning is an intervention performed to correct a problem, specifically an airway obstruction by secretions.
Evaluate each option to determine if it represents a problem or a state of normalcy/stability.
Option A ('Normal air entry'), Option B ('effective cough'), and Option D ('Normal respiratory rate') all describe a patient who is stable or managing their airway effectively.
Option C ('Reduced oxygen saturation levels') describes a clear problem—hypoxia—which is a direct consequence of an obstructed airway.
Conclude that the sign of a problem (hypoxia) is the correct indication for the intervention (suctioning).

Concept Tested & Keywords

Concept Tested: Indications for Endotracheal Suctioning
Stem keywords: mechanical ventilator, suctioning, respiratory status
Lead-in keywords: indicates the need
Clinical cues: Patient on a mechanical ventilator, which implies an artificial airway and potential difficulty in clearing secretions.
Negative lead-in flag: false

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Practise the full NORCET 6 Prelims -2024

Attempt every question from this paper in a timed mock, then review the full solution for each one.