Abstract
The aim of this study was to analyse the results of exhaled nitric oxide examination in a group of patients with hyper-responsive-ness. The study was performed on a group of 297 children who underwent spirometry, examination of exhaled nitric oxide, skin prick test and stress probe in years 2010-2012 in Pulmonology and Allergy Centre in Karpacz. Mean age of patients was 11.86. Patients were divided into four groups: with diagnosed asthma, with bronchial hyper-responsiveness (BHR), with described asthma without BHR and a group with BHR without diagnosed asthma. The results of the study confirmed the presence of high-er amount of exhaled nitric oxide in patients with asthma and bronchial hyper-responsiveness. The elevation of NO concen-tration correlated with age; there was no significant difference between sexes.