Related Experiment Video
Updated: Jul 29, 2026

Bronchial Thermoplasty: A Novel Therapeutic Approach to Severe Asthma
Published on: November 4, 2010
Inhaled hyperosmolar agents for bronchiectasis.
1Hillingdon Hospital, Dept of Respiratory Medicine, Pield Heath Road, Uxbridge, Middlesex, UK, UB8 3NN. pjwills@doctors.org.uk
Inhaled dry powder mannitol significantly improves lung mucus clearance in bronchiectasis patients. Further research is needed to evaluate hypertonic saline and long-term effects.
Area of Science:
- Respiratory Medicine
- Pulmonology
- Clinical Trials
Background:
- Mucus retention is a key feature of bronchiectasis, leading to bacterial colonization and airway damage.
- Neutrophilic response to bacteria fails to clear infection and may worsen lung injury.
- Hypertonic saline and inhaled dry powder mannitol are potential treatments for mucus stasis.
Purpose of the Study:
- To evaluate the efficacy of inhaled hyperosmolar substances for treating bronchiectasis.
Main Methods:
- Searched the Cochrane Airways Group Specialised Register and contacted experts.
- Included trials of hyperosmolar inhalation in non-cystic fibrosis bronchiectasis patients.
- Two reviewers assessed study suitability; data collection and analysis were performed.
Main Results:
- Two small studies (28 participants) met inclusion criteria.
- Mannitol inhalation doubled tracheobronchial clearance in central and intermediate lung regions.
- No adverse effects were reported; one study showed a favorable health status response.
Conclusions:
- Dry powder mannitol enhances tracheobronchial clearance in bronchiectasis and other respiratory conditions.
- Hypertonic saline's efficacy in bronchiectasis requires further study, though it benefits other conditions.
- Future research should include health status, exacerbations, and adverse events in longer-term trials.
Related Concept Videos
Drugs Used in Upper Respiratory Disorders: Overview
Antihistamines (e.g., Benadryl) block histamines from binding. Histamines are chemicals released during an allergic reaction in the body. As a...
Drugs Used in Lower Respiratory Disorders: Overview
Bronchodilators, the first step of respiration enhancement, come in various forms, each with its own mechanism...
Upper Respiratory Drugs: Antitussives, Expectorants, and Mucolytics
Antitussives include codeine, dextromethorphan (Robitussin), and benzonatate (Tessalon). Codeine and dextromethorphan exert their effects centrally by suppressing the cough reflex center in the medulla. Benzonatate operates peripherally within the respiratory tract by anesthetizing...
Antiasthma Drugs: β2-Adrenoceptor Agonists
One class of bronchodilators includes β2-adrenoceptor agonists. These agents target the β2-adrenoceptors located on bronchial smooth muscle cells. By stimulating these receptors, β2-agonists induce relaxation in these...
COPD: Management Using Bronchodilators and Corticosteroids
Inhaled Medications

