Intensive bronchial dilation test: A modified method for evaluating airway reversibility

Area of Science:

• Pulmonology
• Respiratory Medicine
• Clinical Diagnostics

Background:

• A negative bronchial dilation test (BDT) may inaccurately suggest irreversible airway obstruction in severe cases.
• Factors like bronchospasm, mucus, or bronchodilator insensitivity can lead to false negatives.
• This impacts subsequent diagnosis and treatment strategies for patients with severe obstructive or mixed ventilation dysfunction.

Purpose of the Study:

• To evaluate the feasibility of the intensive bronchial dilation test (IBDT) for identifying false-negative BDT results.
• To compare the effectiveness of IBDT against standard BDT and regular anti-inflammatory treatment in assessing airway reversibility.

Main Methods:

• Retrospective analysis of 82 patients with severe obstructive or mixed ventilation dysfunction.
• IBDT involved administering a triple-drug nebulized therapy (salbutamol, budesonide, ipratropium) followed by lung function testing.
• Lung function was assessed after IBDT and after 2-4 weeks of anti-inflammatory treatment for comparison.

Main Results:

• IBDT significantly improved lung function indexes compared to BDT (P < 0.01).
• The number of patients with reversible airway obstruction increased from 31 to 61 after IBDT (P < 0.001).
• IBDT demonstrated high accuracy (91.46%) and sensitivity (89.71%) for airway reversibility, significantly exceeding BDT's performance.

Conclusions:

• The intensive bronchial dilation test (IBDT) offers a more accurate and rapid method for evaluating airway reversibility.
• IBDT effectively identifies patients with reversible airway obstruction, even when standard BDT yields negative results.
• This diagnostic approach can guide more precise treatment for severe obstructive and mixed ventilation dysfunction.