NORCET 5 Prelims - Sept 2023 (Shift-1)
Medical Surgical Nursing
Easy
Identify the following image?
Appeared in: NORCET 5 Prelims - Sept 2023 (Shift-1)
Explanation
- The image displays a spacer, a device used to enhance the delivery of medication from a metered-dose inhaler (MDI).
- It functions as a holding chamber that slows down the aerosolized medication particles, allowing for a slower, deeper, and more effective inhalation.
- This process increases the amount of medication reaching the lungs and reduces deposition in the oropharynx, minimizing local side effects.
- The presence of a face mask indicates it is designed for patients, like young children or the elderly, who cannot form a tight seal around a standard mouthpiece.
Why Other Options Were Wrong
- Option A: An incentive spirometer is a device used for respiratory exercises to encourage deep breathing and prevent atelectasis, especially after surgery. It is not used for delivering medication.
- Option B: A PET (Positron Emission Tomography) machine is a large, complex diagnostic imaging device used to observe metabolic processes in the body, primarily for detecting cancer or brain disorders. It is not a handheld respiratory device.
- Option D: A Venturi mask is an oxygen delivery device designed to provide a precise, fixed concentration of oxygen by mixing it with room air. It is used for controlled oxygen therapy, not for administering aerosolized medications from an MDI.
Related Visual
- Visual 1: Diagram - A diagram illustrating how a spacer works, showing the MDI, the chamber, and the flow of medication into the lungs versus deposition in the mouth.
- Visual 2: Image - A picture of an incentive spirometer to contrast its appearance and function with a spacer.
- Visual 3: Image - A picture of a Venturi mask with its color-coded diluters to show a different type of respiratory mask.
Clinical Relevance
- Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Identification of respiratory therapy equipment as background academic context rather than a clinical decision trigger.
- Nurses play a crucial role in educating patients and caregivers on the correct technique for using an MDI with a spacer to ensure effective medication delivery and treatment adherence.
- Improper use of an MDI is a common problem leading to poor disease control in asthma and COPD. The use of a spacer simplifies the process and significantly improves outcomes.
- What if? If the patient is an adult with excellent hand-breath coordination, a spacer may not be strictly necessary, but it is still recommended, especially for inhaled corticosteroids, to reduce the risk of oral thrush.
How to Approach the Question
- First, carefully examine the image to identify its key components. Note the clear chamber, the port for an inhaler canister, and the face mask.
- Consider the function of a device with these features. The chamber holds medication, and the mask delivers it, suggesting a medication delivery aid.
- Evaluate the given options based on your visual analysis.
- Eliminate 'Incentive spirometry' as it's for breathing exercises, not medication.
- Eliminate 'PET machine' as it's a large diagnostic scanner.
- Differentiate between 'Spacer' and 'Venturi mask'. A Venturi mask is for precise oxygen delivery, while a spacer is for MDI medication delivery. The device in the image is clearly designed for an MDI.
Concept Tested & Keywords
- Concept Tested: Identification of respiratory therapy equipment
- Stem keywords: Identify, image
- Lead-in keywords: BEST, MOST RELEVANT CLUE
- Clinical cues: The device has a chamber, a port for an inhaler, and a face mask, which are characteristic features of a spacer.
Question ID
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Practise the full NORCET 5 Prelims - Sept 2023 (Shift-1)
Attempt every question from this paper in a timed mock, then review the full solution for each one.
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