%0 Journal Article %T DNase and atelectasis in non-cystic fibrosis pediatric patients %A Tom Hendriks %A Matthijs de Hoog %A Maarten H Lequin %A Annick S Devos %A Peter JFM Merkus %J Critical Care %D 2005 %I BioMed Central %R 10.1186/cc3544 %X 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.In 25 of 30 patients (median [range] age, 1.6 [0.1¨C11] 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.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¨Cperfusion 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.Atelectasis is a problem in many children with respiratory infections or who require ventilation. At least 8% of children on mechanical ventilation develop pulmonary atelectasis, with a concomitant increase in the morbidity and the length of stay [1]. There is no 'golden standard' for treatment of atelectasis in children. Efficacy of treatment modalities such as inhaled bronchodilators, steroids, physiotherapy and nebulised sodium chloride (NaCl 0.9%) has not been demonstrated [2].Atelectasis is commonly caused by sputum %U http://ccforum.com/content/9/4/R351