Study population
The data of children followed for asthma in the Pediatric Pneumology and
Allergology Department of the Necker-Enfants Malades Hospital between
June 2013 and February 2021 who were tested for HVS were retrospectively
analyzed. These children were identified using Dr Warehouse software24, which allowed a search by keywords present in the
computerized medical reports. The keywords or keyword combinations used
to identify the patients were: ”hyperventilation syndrome and asthma”,
”hyperventilation test and asthma”, ”Nijmegen and asthma”,
”hyperventilation test”, ” hyperventilation”, “hyperventilation and
asthma”. Non-asthmatic patients and those for whom the lack of data did
not allow a classification according to the GINA and an assessment of
asthma control were excluded from the analysis.