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Updated: Sep 13, 2025

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

Yujuan Yang1, Ningbo Tang1,2, Yuemei Sun1,2

  • 1Shandong Provincial Clinical Research Center for Otorhinolaryngologic Diseases, Yantai Yuhuangding Hospital, Qingdao University, Yantai, China.

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The intensive bronchial dilation test (IBDT) accurately identifies reversible airway obstruction in severe lung dysfunction, outperforming the standard bronchial dilation test (BDT). This improved diagnostic accuracy aids in timely treatment for patients with obstructive or mixed ventilation issues.

Keywords:
Airway obstructionairway reversibilityasthmaintensive bronchial dilation testlung function

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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.