INI-CET EXAM -2025
Medical & Surgical Nursing
Medium
Which of the following has the highest risk of causing invasive pulmonary aspergillosis?
Appeared in: INI-CET EXAM -2025
Explanation
- Invasive Pulmonary Aspergillosis (IPA) is a life-threatening fungal infection caused by the Aspergillus species.
- The body's primary defense mechanism against inhaled Aspergillus spores is the neutrophil, a type of white blood cell.
- Febrile neutropenia is a condition characterized by a significantly low neutrophil count (neutropenia) and a fever, which is often a sign of infection.
- This combination represents a critical failure of the body's main defense against Aspergillus, making it the single most important risk factor for the fungus to invade lung tissue and cause IPA.
Why Other Options Were Wrong
- Option B: A CD4 count below 50 cells/μL indicates severe immunodeficiency (typically advanced HIV/AIDS), which is a defect in T-cell mediated immunity. While this increases the risk for many opportunistic infections, the risk for IPA is less pronounced compared to the risk associated with severe neutropenia.
- Option C: Severe protein-energy undernutrition weakens the immune system globally. However, it is a non-specific risk factor and does not impair the specific line of defense (neutrophils) as severely as conditions like chemotherapy-induced neutropenia.
- Option D: This is a crucial distractor. Bronchial asthma is a risk factor for a different condition called Allergic Bronchopulmonary Aspergillosis (ABPA), which is a hypersensitivity reaction to Aspergillus in the airways. It is not an invasive disease where the fungus grows into lung tissue.
Related Visual
- Visual 1: Diagram - A flowchart comparing the pathophysiology of Invasive Pulmonary Aspergillosis (IPA) and Allergic Bronchopulmonary Aspergillosis (ABPA). IPA shows fungal hyphae invading lung tissue, while ABPA shows an allergic inflammatory response within the bronchial lumen.
- Visual 2: Image - A chest CT scan showing the characteristic 'halo sign' or 'air crescent sign', which are highly suggestive of IPA in a neutropenic patient.
Clinical Relevance
- Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Risk factors for opportunistic fungal infections, specifically Invasive Pulmonary Aspergillosis (IPA) as background academic context rather than a clinical decision trigger.
- Nurses must maintain a high index of suspicion for IPA in immunocompromised patients, especially those in oncology and transplant units who present with fever and respiratory symptoms.
- Strict neutropenic precautions, including protective isolation and HEPA filtration, are critical nursing interventions to prevent exposure to airborne fungal spores like Aspergillus in high-risk patients.
- What if? If the patient had a history of cystic fibrosis or asthma and presented with worsening bronchospasm and brownish mucus plugs, the most likely diagnosis would be Allergic Bronchopulmonary Aspergillosis (ABPA), not IPA. The treatment would focus on corticosteroids and antifungals to reduce the allergic response, rather than aggressive systemic antifungal therapy for invasion.
How to Approach the Question
- First, identify the key terms in the question: 'highest risk' and 'invasive pulmonary aspergillosis'. This tells you to compare the given conditions and find the strongest predisposing factor for this specific fungal infection.
- Recall or determine the primary host defense against Aspergillus. The key immune cells are neutrophils.
- Analyze each option based on its effect on the immune system, specifically on neutrophils.
- Option A, 'Febrile neutropenia', directly points to a low count of the most critical defense cell (neutrophils) plus a sign of infection (fever). This is a perfect match for high risk.
- Evaluate the other options. 'CD4 <50' relates to T-cells, not the primary defense. 'Undernutrition' is too general. 'Asthma' relates to an allergic form (ABPA), not the invasive form (IPA).
- Conclude that the condition causing a severe and specific defect in the primary host defense (neutropenia) is the highest risk factor.
Concept Tested & Keywords
- Concept Tested: Risk factors for opportunistic fungal infections, specifically Invasive Pulmonary Aspergillosis (IPA).
- Stem keywords: highest risk, invasive pulmonary aspergillosis
- Lead-in keywords: Which of the following
Question ID
QtjvRkc4MqhfsSiSE2YbBZ
Practise the full INI-CET EXAM -2025
Attempt every question from this paper in a timed mock, then review the full solution for each one.
More Gas Exchange and Respiratory Function Questions
- Which is the most relevant knowledge about oxygen administration to a client with COPD?
- Patient in emergency department diagnosed to have fluid and air present in lung. What is the above-mentioned condition known as?
- Patient is suffering from dyspnea. Which position will you provide for patient to relieve?
- Identify the following instrument which is used in diagnostic procedures:
- Identify the instrument shown in the following image:
- Identify the tube in the following image:
- Which of the following method is used for high flow oxygen administration:
- The following conditions can be diagnosed using chest X-ray; EXCEPT:
- The X-ray finding in a patient with pleural effusion reveals that fluid starts to build up as a result of gravity in:
- Surgical procedure used to correct a deviated nasal septum is:
More INI-CET EXAM -2025 Questions
- The highlighted structure in the provided image articulates with which bone?& x20;
- Through which of the following foramina does the nerve supplying the muscles of mastication pass?& x20;
- In the given image, which region is correctly paired with its corresponding brain structure? • Middle cerebellar peduncle • Fasciculus cuneatus • Sup…
- Which of the following muscles is NOT typically associated with dysphagia or dysarthria?
- A muscle of mastication involved in opening the mouth exhibits the following characteristics. Identify the incorrect statement about it:
- In the illustrated image, which of the following structures is NOT associated with the area marked by the arrow?& x20;
- Match the following embryonic aortic arches with their respective adult derivatives: A. 1st Arch 1. Maxillary artery& x20; B. 2nd Arch 2. Common caro…
- Which of the following histology image is not an endocrine structure?& x20;
- Marked structure separates which of the following:
- Which of the following bones of the skull gives passage to a nerve arising from the brain & x20;