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Background
Exhaled nitric oxide (FeNO) measurements and eucapnic voluntary hyperventilation (EVH) tests have been used as diagnostic tools for asthma. Data on the impact of hyperventilation on the level of FeNO are limited.
Aim
We aimed to evaluate whether EVH tests affect the level of FeNO in children aged 10–16 years.
Methods
A total of 234 children aged 10–16 years had a 6‐min EVH test performed...
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