Prevalence of Hyperventilation Syndrome in Difficult Asthma

Conditions:   Difficult Asthma;   Severe Persistent Asthma;   Hyperventilation SyndromeIntervention:   Other: Diagnostic of chronic hyperventilation syndromeSponsors:   Assistance Publique - Hôpitaux de Paris;   Assistance Publique - Hôpitaux de ParisActive, not recruiting – verified May 2013 View full post on ClinicalTrials.gov: asthma | received in the last 14 days