What nursing action will limit hypoxia when suctioning a client's airway?

NHM UP Staff Nurse - 2019

Medical Surgical Nursing

Medium

Appeared in: NHM UP Staff Nurse - 2019

Explanation

The most critical action to limit hypoxia is to apply suction only during the withdrawal of the catheter.
Applying suction during insertion removes oxygen from the airway before the catheter even reaches the target secretions, leading to a rapid drop in oxygen saturation.
This technique minimizes the duration of negative pressure in the lungs and reduces trauma to the delicate mucous membranes of the airway.
The correct procedure involves inserting the catheter without suction, advancing to the correct depth, and then applying intermittent suction while rotating and withdrawing the catheter.

Option B: Limiting suctioning to half a minute (30 seconds) is far too long and dangerous. It significantly increases the risk of severe hypoxia, bradycardia, and other arrhythmias.
Option C: Lubricating the catheter eases insertion and reduces mucosal trauma, but it is not the primary action to prevent hypoxia.
Option D: Using a sterile catheter is a critical infection control measure, but it has no effect on preventing hypoxia.

Clinical Relevance

Nursing practice connection: Prioritize focused assessment, early escalation, and real-time monitoring when managing Safe airway suctioning technique to prevent hypoxia in acute care settings.
Improper suctioning technique is a common cause of iatrogenic complications, including hypoxemia, cardiac arrhythmias, and tracheal injury. Mastering this skill is fundamental to patient safety in critical care.
Nurses must continuously monitor the patient's heart rate, rhythm, and oxygen saturation (SpO2) via pulse oximetry throughout the entire suctioning procedure. If the SpO2 drops significantly (e.g., below 90% or 5% from baseline) or if an arrhythmia occurs, the procedure must be stopped immediately, and the patient must be re-oxygenated.
What if the patient's baseline SpO2 is already low (e.g., 91%) and they have copious secretions? The nurse should prioritize hyperoxygenation for a longer period (e.g., 60 seconds) before suctioning, ensure each pass is very brief (less than 10 seconds), and allow for a longer recovery time (at least 1-2 minutes) between passes to allow the SpO2 to return to baseline.

How to Approach the Question

First, identify the core of the question: it asks for a nursing action that specifically 'limits hypoxia' during airway suctioning.
Next, analyze each option based on its primary purpose and its direct effect on oxygen levels.
Option A: 'Apply suction only after catheter is inserted.' Think about the physics: applying suction removes air. If you do it on the way in, you're removing oxygen before you even get to the mucus. This seems like a direct way to limit oxygen loss.
Option B: 'Limit suctioning... to half a minute.' Evaluate the time frame. Is 30 seconds a short or long time for a procedure that stops airflow? Recall or look up the standard time limit for suctioning. This time seems excessively long.
Option C: 'Lubricate the catheter.' What is the purpose of lubrication? It reduces friction and trauma. Does it directly affect oxygen levels? No.
Option D: 'Use a sterile suction catheter.' What is the purpose of sterility? To prevent infection. Does it directly affect oxygen levels? No.

Concept Tested & Keywords

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E6 Nursing Fundamentals Potter Perry 12e Part 5 pp. 16-18, 19-21