A child has a chronic, nonproductive cough and diffuse wheezing during the expiratory phase of respiration. This suggests which respiratory condition?
A.
Foreign body in the trachea.
B.
Bronchiolitis.
C.
Asthma.
D.
Pneumonia.
The correct answer and Explanation is :
The correct answer is C. Asthma.
Asthma is a chronic respiratory condition characterized by inflammation and narrowing of the airways, leading to symptoms such as wheezing, coughing, chest tightness, and shortness of breath. In the case described, the child presents with a chronic, nonproductive cough and diffuse wheezing during the expiratory phase, which are hallmark signs of asthma.
Why Asthma?
- Chronic, nonproductive cough: This type of cough is common in asthma, especially at night or early morning, due to airway hyperreactivity and inflammation.
- Wheezing during the expiratory phase: This occurs because of airflow obstruction caused by narrowing of the bronchioles, leading to difficulty expelling air from the lungs. The characteristic “musical” sound of wheezing is often most pronounced during expiration.
- Airway inflammation and hyperreactivity: Asthma involves chronic inflammation of the airways, which can lead to increased sensitivity or hyperreactivity to triggers such as allergens, exercise, infections, and environmental irritants.
Other Conditions Considered:
- A. Foreign body in the trachea: This would likely cause more localized wheezing and sudden onset of symptoms, such as acute respiratory distress and stridor, rather than diffuse expiratory wheezing.
- B. Bronchiolitis: Bronchiolitis, often caused by respiratory syncytial virus (RSV), is more common in infants and typically presents with acute symptoms such as fever, cough, wheezing, and labored breathing. It is not characterized by chronic cough.
- D. Pneumonia: Pneumonia usually presents with productive cough, fever, and localized crackles or rales rather than diffuse wheezing. Wheezing is less common unless associated with underlying asthma.
In this case, the chronic nature of the cough, along with diffuse wheezing during expiration, points strongly to asthma. Early diagnosis and treatment are critical for managing symptoms and preventing exacerbations.