NORCET 6 mains-2024
Medical & Surgical Nursing
Hard
In mechanical ventilation, if a low-pressure alarm sounds, what is the priority nursing action?
Appeared in: NORCET 6 mains-2024
Explanation
- A low-pressure alarm signifies a leak or disconnection in the ventilator circuit, meaning the patient is not receiving adequate oxygenation or ventilation.
- The immediate priority, following the ABCs (Airway, Breathing, Circulation), is to ensure the patient is breathing.
- Manually ventilating with an Ambu bag connected to 100% oxygen is the fastest and safest way to restore ventilation, bypassing the equipment malfunction.
- This action stabilizes the patient, providing time for the nurse or another team member to safely troubleshoot the ventilator without risk of hypoxia.
Why Other Options Were Wrong
- Option A: Checking the ventilator settings is incorrect because the cause of a low-pressure alarm is almost always a mechanical issue (like a disconnection), not a programming error. This action wastes critical time when the patient is not being ventilated.
- Option C: Administering a sedative is dangerous and incorrect. Sedation is considered for a high-pressure alarm if the patient is agitated or fighting the ventilator. Sedating a patient who is disconnected from their air supply can suppress their own respiratory drive and hasten respiratory arrest.
- Option D: Increasing the oxygen flow rate is futile if the ventilator circuit is disconnected or has a major leak. The oxygen will simply escape into the room and will not reach the patient's lungs.
Related Visual
Clinical Relevance
- Nursing practice connection: Safe nursing care depends on performing Priority nursing action for mechanical ventilator alarms in the correct sequence, documenting the action clearly, and monitoring for the expected response.
- The guiding principle for all ventilator alarms is 'always assess the patient first, then the machine'.
- Failure to immediately address a low-pressure alarm by ensuring ventilation can lead to rapid hypoxemia, bradycardia, and cardiac arrest.
- What if? If a high-pressure alarm sounds, the priority action changes. The nurse should first look for an obstruction, such as suctioning the patient for secretions or unkinking the tubing, before considering manual ventilation.
How to Approach the Question
- First, identify the question type. This is a clinical priority question asking for the most important immediate action.
- Identify the core problem in the stem: a 'low-pressure alarm' on a mechanical ventilator.
- Recall the meaning of a low-pressure alarm, which signifies a leak or disconnection in the system.
- Analyze the immediate consequence for the patient: they are not receiving air or oxygen.
- Apply the ABCs (Airway, Breathing, Circulation). The most urgent need is to restore breathing.
- Evaluate the options to see which one directly and immediately addresses the loss of ventilation. Manually ventilating with an Ambu bag is the only option that achieves this, making it the priority.
Concept Tested & Keywords
- Concept Tested: Priority nursing action for mechanical ventilator alarms.
- Stem keywords: mechanical ventilation, low-pressure alarm, priority nursing action
- Lead-in keywords: priority
Question ID
QbNLTSz92PbL9Q6eWCTRvP
Reference Book
E6 Nursing Fundamentals Potter Perry 12e Part 5 p. 2
Practise the full NORCET 6 mains-2024
Attempt every question from this paper in a timed mock, then review the full solution for each one.
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