Bronchiolitis
The most common cause of bronchiolitis is respiratory syncytial virus
What our notes say
- The most common cause of bronchiolitis is respiratory syncytial virus (Paediatrics end of fourth year special supplementary exam: August 2019, Paper On)
- A viral cold followed by wheeze in an infant under 1 year is bronchiolitis. (Paediatrics end of first trimester exam (MBPE 4300): 27 November 2018, 49 of 50 )
- Bronchiolitis is an acute illness of infants, lasting days to 2 weeks. (Paediatrics end of first trimester exam (MBPE 4300): 27 November 2018, 49 of 50 )
- A cold, then wheeze and hyperinflation in an infant under 2 years during an outbreak is bronchiolitis. (Paediatrics end of fourth year main exam: 1 July 2019, Paper One, 99 of 100 MCQs)
- Options b and e are also true, but bronchiolitis is the classic answer being tested. (Medical Virology & Mycology Paper Two 2022/2023 — MKU MBMM 3300 Questions & Answ)
- Acute bronchiolitis and viral pneumonia are manifestations of: (Medical Virology CAT 2024/2025 — MKU MBMM 3333 Questions & Answers)
Study material on Bronchiolitis
- Paediatrics main exam (MBPE 4300): 24 January 2022, Paper One, 100 MCQs, 2 short essays and 2 long essays
- Paediatrics end of fourth year main exam: 1 July 2019, Paper One, 99 of 100 MCQs and essays
- Paediatrics end of fourth year special supplementary exam: August 2019, Paper One, 87 of 100 MCQs
- Paediatrics end of first trimester exam (MBPE 4300): 27 November 2018, 49 of 50 MCQs
- Medical Virology & Mycology Paper Two 2022/2023 — MKU MBMM 3300 Questions & Answers
- Lung Pathology — Must-Know
- Respiratory Pathology 1b
- Medical Virology CAT 2024/2025 — MKU MBMM 3333 Questions & Answers
- Examination of Respiratory system
- Endocrine & Renal Pathology
- Medical Virology CAT 2024/2025 — MKU MBMM 3333 MCQs with Answers
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Practice questions on Bronchiolitis
Respiratory virus most likely to cause bronchiolitis in young children?
- Rhinovirus
- Respiratory Syncytial Virus (RSV)
- Influenza virus
- Adenovirus
- Both a and c
Answer: B. RSV is the leading cause of bronchiolitis in infants.
Acute bronchiolitis and viral pneumonia are manifestations of:
- Upper respiratory tract infection
- Lower respiratory tract infection
- Tuberculous invasion
- AIDS
- Both a and b
Answer: B. Both processes occur below the larynx.
Respiratory bronchiolitis-ILD differs from DIP in that the macrophage distribution is
- Diffuse throughout all alveolar air spaces
- Concentrated around first and second order respiratory bronchioles
- Predominantly subpleural and along interlobular septa
- Confined to alveolar ducts and terminal bronchioles only
Answer: B. RB-ILD shares the same smoker's macrophages as DIP but in a bronchiolocentric distribution — first and second order respiratory bronchioles. DIP has diffuse air space distribution. Both improve with smoking cessation. ---