Critical Care Paramedic Practice Exam

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What mechanism leads to the respiratory distress seen in bronchiolitis?

Airway obstruction due to mucus production

The mechanism that leads to respiratory distress in bronchiolitis primarily involves airway obstruction due to mucus production. In bronchiolitis, particularly in pediatric cases, the small airways (bronchioles) become inflamed and produce excess mucus. This accumulation of mucus can obstruct airflow, making it more difficult for the individual to breathe effectively. As the bronchioles narrow due to both inflammation and mucus buildup, it leads to increased work of breathing and the characteristic respiratory distress observed in affected patients.

While other options like bronchospasm, pneumonia-related consolidation, and atelectasis can contribute to respiratory issues in different contexts, they are not the primary mechanisms at play in bronchiolitis. Bronchospasm may occur as a response to inflammation but is not the main issue in this condition. Pneumonia-related consolidation and atelectasis are more typically associated with different respiratory illnesses rather than bronchiolitis itself.

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Pneumonia-related consolidation

Bronchospasm

Atelectasis

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