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[On the late post-provocation spasm of the bronchi]
W Grabski1, J Rozniecki, J Grzegorczyk
1Kliniki Pneumonologii i Alergologii IMW AM, Lodzi.
Pneumonologia I Alergologia Polska
|January 1, 1992
Summary
Late bronchospasm occurs in nearly half of asthma patients after exercise, and less frequently after cold air or distilled water inhalation. This reaction, linked to increased NCF activity, is a genuine asthma complication.
Area of Science:
- Pulmonology
- Allergy and Immunology
- Respiratory Medicine
Context:
- Atopic asthma is a chronic respiratory condition characterized by airway inflammation and hyperresponsiveness.
- Understanding the mechanisms and triggers of late asthmatic reactions is crucial for effective patient management.
- Previous research has focused on immediate responses, with less emphasis on delayed bronchospasm.
Purpose:
- To investigate the incidence of late bronchospasm in patients with atopic asthma following various provocation tests.
- To evaluate the role of Neutrophil Chemotactic Factor (NCF) activity in the blood serum during these late reactions.
Summary:
- The study utilized exercise tests, cold air hyperventilation, and distilled water inhalation to provoke asthmatic responses.
- Late bronchospasm was observed in 48% of patients after exercise, 33% after cold air, and 38% after water inhalation.
- Increased NCF activity in blood serum correlated with the occurrence of bronchospasm, confirming its role in the late asthmatic response.
Impact:
- This research confirms that late bronchospasm is a significant and real phenomenon in atopic asthma patients, not merely due to incidental ventilation changes.
- The findings highlight the importance of considering delayed responses in asthma management and treatment strategies.
- Identifying NCF activity as a biomarker could lead to improved diagnostic and therapeutic approaches for asthma.