Acute bronchoconstriction: a sudden narrowing of the airways that results from airway inflammation and smooth muscle contraction, leading to airflow obstruction that is typically reversible.
Mast cells: immune cells that resemble macrophages and are involved in airway inflammation; they search for debris and respond to irritants by releasing mediators that contribute to hypersensitivity reactions.
Eosinophils: a type of white blood cell that plays a key role in airway inflammation and hypersensitivity; elevated levels may indicate allergic responses such as asthma, especially when high in conjunction with increased overall white blood cell count.
Airway inflammation: the process involving immune cell activation and mediator release that causes swelling, increased mucus production, and airway hyperresponsiveness, leading to bronchoconstriction.
1. What is the primary role of mast cells in asthma pathophysiology as described in the source?
2. What is a key feature of pneumonia treatment interventions?
3. Which diagnostic imaging finding is most characteristic of pneumonia as described in the source?
Acute bronchoconstriction — definition?
Sudden airway narrowing from inflammation and smooth muscle contraction.
Mast cells — role?
Release mediators causing airway hypersensitivity.
Eosinophils — role?
Contribute to airway inflammation and allergic responses.
Airway inflammation — result?
Swelling, mucus, hyperresponsiveness, bronchoconstriction.
Bronchoconstriction — cause?
Smooth muscle tightening from inflammation.
Hypersensitivity — mechanism?
Exaggerated immune response to allergens.
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