A 5-year-old girl had a sudden attack of suffocating cough accompanied by wheezing. There was no fever but the child appeared anxious and in distress. What is the most likely diagnosis?
Asthma
Atelectasis
Bronchiectasis
Chronic bronchitis
Emphysema
The Correct Answer is A
A. Asthma: Asthma commonly presents with sudden episodes of cough, wheezing, and respiratory distress due to reversible bronchospasm and airway inflammation. In children, acute bronchoconstriction can cause a suffocating sensation, expiratory wheeze, and anxiety without associated fever. The abrupt onset and absence of infectious signs strongly support an acute asthma exacerbation.
B. Atelectasis: Atelectasis involves collapse of alveoli leading to reduced gas exchange, but it typically presents with decreased breath sounds rather than prominent wheezing. It is more often associated with postoperative states, mucus plugging, or prolonged immobility, and does not usually cause sudden wheezing in an otherwise healthy child.
C. Bronchiectasis: Bronchiectasis is a chronic condition characterized by permanent dilation of bronchi, recurrent infections, and persistent productive cough. It develops over time and is not associated with sudden, isolated episodes of wheezing without fever in a previously well child.
D. Chronic bronchitis: Chronic bronchitis is defined by a productive cough lasting at least three months for two consecutive years, typically seen in adults with long-term irritant exposure. It is not a diagnosis expected in a 5-year-old child and does not present as an acute wheezing episode.
E. Emphysema: Emphysema involves destruction of alveolar walls and loss of elastic recoil, leading to chronic dyspnea. It is primarily seen in adults with prolonged smoking history and does not present as a sudden wheezing attack in a young child.
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Related Questions
Correct Answer is E
Explanation
A. Asthma:Asthma is a chronic inflammatory airway disorder usually triggered by allergens or atopy. While inhaled irritants may exacerbate asthma symptoms, it is not caused by chronic silica exposure and does not produce the fibrotic changes seen in occupational lung diseases.
B. Atelectasis:Atelectasis refers to the collapse of alveoli, usually secondary to obstruction, compression, or surfactant deficiency. It is not a primary disease caused by chronic inhalation of silica dust and does not explain the progressive dyspnea over years in this patient.
C. Bronchiectasis:Bronchiectasis involves permanent dilation of bronchi, often following repeated infections or severe airway obstruction. Chronic silica exposure typically causes interstitial fibrosis rather than bronchial dilation, making bronchiectasis less likely in this occupational scenario.
D. Emphysema:Emphysema is characterized by alveolar wall destruction and airspace enlargement, most commonly due to smoking or alpha-1 antitrypsin deficiency. While dust exposure may contribute to obstructive changes, the fibrotic response from silica inhalation leads to a restrictive pattern rather than classic emphysema.
E. Pneumoconiosis:Pneumoconiosis is a fibrotic lung disease caused by chronic inhalation of mineral dusts, including silica. Inhaled quartz particles trigger macrophage-mediated inflammation, collagen deposition, and nodular fibrosis, leading to progressive dyspnea, reduced lung compliance, and radiographic changes typical of silicosis in stone workers.
Correct Answer is C
Explanation
A. Chronic inflammation:Chronic inflammation involves infiltration of tissues by lymphocytes and macrophages and is seen in conditions such as chronic infections or autoimmune disorders. It is not the primary feature of varicose veins, esophageal varices, hemorrhoids, or varicoceles, which are structural vascular abnormalities.
B. Cystic medial necrosis:Cystic medial necrosis involves degeneration of the elastic and muscular components of arterial walls and is typically associated with aortic aneurysms or Marfan syndrome. It does not describe venous dilatation or tortuosity seen in varicosities.
C. Enlarged and tortuous blood vessels:Varicose veins, esophageal varices, hemorrhoids, and varicoceles are all characterized by dilated, elongated, and tortuous veins. These changes result from increased venous pressure, valve incompetence, or venous obstruction, leading to the visible or palpable vascular abnormalities.
D. Hyaline arteriosclerosis:Hyaline arteriosclerosis involves deposition of homogeneous hyaline material in small arteries and arterioles, usually from chronic hypertension or diabetes. It affects arterial walls rather than veins and is unrelated to varicosities.
E. Severe atherosclerosis:Atherosclerosis is a disease of arterial walls involving lipid deposition, fibrosis, and plaque formation. It affects arteries rather than veins and does not produce the tortuous dilatation characteristic of varicose veins or other venous varicosities.
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