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Published on: April 21, 2022
DNase and atelectasis in non-cystic fibrosis pediatric patients
Tom Hendriks1, Matthijs de Hoog, Maarten H Lequin
1Catharina Hospital, Eindhoven, The Netherlands.
Insights
DNase treatment rapidly improved clinical symptoms within 2 hours and radiologic findings within 24 hours in pediatric patients with atelectasis. This suggests DNase may be an effective treatment for infectious atelectasis in children without cystic fibrosis.
Area of Science:
- Pulmonology
- Pediatric Medicine
- Pharmacology
Background:
- Atelectasis lacks evidence-based treatments.
- Persistent atelectasis in children often requires novel therapeutic approaches.
- Current treatments like bronchodilators and physiotherapy are not always effective.
Purpose of the Study:
- To evaluate the clinical and radiologic effects of DNase in pediatric patients with persistent atelectasis.
- To assess DNase efficacy in non-cystic fibrosis children unresponsive to standard therapies.
- To identify potential complications associated with DNase treatment for atelectasis.
Main Methods:
- Retrospective descriptive study of non-cystic fibrosis pediatric patients treated with DNase (nebulized or endotracheal).
- Inclusion criteria: persistent atelectasis unresponsive to bronchodilators and physiotherapy.
- Endpoints: blood pCO2, heart rate, respiratory rate, FiO2, and chest X-ray scores before and after treatment.
Main Results:
- Significant clinical improvement in most parameters within 2 hours (p < 0.01).
- Significant improvement in chest X-ray scores within 24 hours (p < 0.001).
- Temporary airway obstruction and desaturations occurred in 3 patients, possibly due to mucus mobilization.
Conclusions:
- DNase demonstrated rapid clinical and radiologic improvement in pediatric patients with infectious atelectasis.
- DNase may be a viable treatment option for atelectasis in non-cystic fibrosis pediatric patients.
- Potential for mucus mobilization complications necessitates careful monitoring.
Introduction:
No evidence based treatment is available for atelectasis. We aimed to evaluate the clinical and radiologic changes in pediatric patients who received DNase for persistent atelectasis that could not be attributed to cardiovascular causes, and who were unresponsive to treatment with inhaled bronchodilators and physiotherapy.
Methods:
All non-cystic fibrosis pediatric patients who received nebulised or endotracheally instilled DNase for atelectasis between 1998 and 2002, with and without mechanical ventilation, were analysed in a retrospective descriptive study. The endpoints were the blood pCO2, the heart rate, the respiratory rate, the FiO2 and the chest X-ray scores before and after treatment.
Results:
In 25 of 30 patients (median [range] age, 1.6 [0.1-11] years) who met inclusion criteria, paired data of at least three endpoints were available. All clinical parameters improved significantly within 2 hours (P < 0.01), except for the heart rate (P = 0.06). Chest X-ray scores improved significantly within 24 hours after DNase treatment (P < 0.001). Individual improvement was observed in 17 patients and no clinical change was observed in five patients. Temporary deterioration (n = 3) was associated with increased airway obstruction and desaturations. No other complications were observed.
Conclusion:
After treatment with DNase for atelectasis of presumably infectious origin in non-cystic fibrosis pediatric patients, rapid clinical improvement was observed within 2 hours and radiologic improvement was documented within 24 hours in the large majority of children, and increased airway obstruction and ventilation-perfusion mismatch occurred in three children, possibly due to rapid mobilisation of mucus. DNase may be an effective treatment for infectious atelectasis in non-cystic fibrosis pediatric patients.
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