Acoustic Reflection Method and Work of Breathing (MAVAS)
Acoustic Reflection Method and Work of Breathing : Two New Methods to Measure Children's Upper Airway Obstruction
Upper airway obstruction (UAO) is very common in children. Presently, the importance of the UAO is evaluated by the physician during an endoscopic evaluation under general anaesthesia.
The aim of the study is to evaluate two new techniques to quantify the importance of the UAO in children; the acoustic reflection method and the measurement of the work of breathing.
80 children will be included in this monocentric, prospective, open labelled study.
Studie Overzicht
Toestand
Conditie
Interventie / Behandeling
Gedetailleerde beschrijving
The following evaluations will be performed the day prior to the endoscopic evaluation :1) calculation of a clinical score based on the diurnal and nocturnal respiratory and nutritional tolerance of the UAO, 2) evaluation of the importance and the localisation of the UAO assessed by the acoustic reflection method, 3) measurement of the work of breathing, 4) recording of nocturnal gas exchange during at least 6 hours by s single monitor (Sentec™) which measures pulse oximetry (SaO2) and transcutaneous carbon dioxide (PtcCO2), and evaluation of sleep quality by actigraphy (recording of patient's movements by an Actiwatch™).
All the patients will be re-assessed after 3 months. If no treatment is required, a second clinical evaluation with an acoustic reflection examination will be performed. If a surgical treatment or a noninvasive positive pressure ventilation will be necessary, a second complete evaluation will be performed with an endoscopic examination, the calculation of the clinical score, an acoustic reflection examination, the measurement of the work of breathing, and the recording of the nocturnal gas exchange and sleep quality. This second endoscopic examination will be performed only for medical purpose and not for research only.
The study will last 24 months, comprising 21 months for the inclusion of the patients and 3 months for the analysis of the data.
Studietype
Inschrijving (Werkelijk)
Fase
- Niet toepasbaar
Contacten en locaties
Studie Locaties
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Paris, Frankrijk, 75020
- Hospital Armand Trousseau, Pediatric Pulmonology department and ENT department
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Deelname Criteria
Geschiktheidscriteria
Leeftijden die in aanmerking komen voor studie
Accepteert gezonde vrijwilligers
Geslachten die in aanmerking komen voor studie
Beschrijving
Inclusion Criteria:
- children aged 0 to 15 years old,
- in a stable state,
- presenting an UAO which requires an endoscopic evaluation under general anaesthesia
- signed informed consent
- affiliation to french health benefits
Exclusion Criteria:
- UAO due solely to a hypertrophy of the adenoids and/or the tonsils,
- patients with a tracheostomy or a non operated cleft palate
Studie plan
Hoe is de studie opgezet?
Ontwerpdetails
- Primair doel: Diagnostisch
- Toewijzing: Niet-gerandomiseerd
- Interventioneel model: Parallelle opdracht
- Masker: Geen (open label)
Wapens en interventies
Deelnemersgroep / Arm |
Interventie / Behandeling |
|---|---|
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Experimenteel: 1
Children with upper airway obstruction
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Endoscopic evaluation done under general anaesthesia.
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Actieve vergelijker: 2
Children without upper airway obstruction
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Acoustic reflection gives the longitudinal cross-sectional area profile along airway.Based on planar acoustic wave propagating in a rigid duct connected to airway.
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Wat meet het onderzoek?
Primaire uitkomstmaten
Uitkomstmaat |
Tijdsspanne |
|---|---|
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To compare the importance and the localisation of the UAO assessed by the acoustic reflection method and by the endoscopic evaluation under general anaesthesia
Tijdsspanne: At the inclusion visit
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At the inclusion visit
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Secundaire uitkomstmaten
Uitkomstmaat |
Tijdsspanne |
|---|---|
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To evaluate the feasibility of the acoustic method for the evaluation of UAO in children
Tijdsspanne: At the inclusion visit
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At the inclusion visit
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To compare the importance and the localisation of the UAO assessed by the acoustic reflection method with the respiratory (during sleep and wakefulness) and nutritional consequences of the UAO
Tijdsspanne: At the inclusion visit
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At the inclusion visit
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To compare the importance of the UAO assessed by the acoustic reflection method with the measurements of the work of breathing
Tijdsspanne: At the inclusion visit
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At the inclusion visit
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To compare the importance and the localisation of the UAO assessed by the acoustic reflection method with the results of a high resolution computed tomography scan of the upper airways if done for the medical reasons
Tijdsspanne: At the inclusion visit
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At the inclusion visit
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To correlate the importance and the localisation of the UAO assessed by the acoustic reflection method with the outcome of surgery if required
Tijdsspanne: At the inclusion and 3 months visits
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At the inclusion and 3 months visits
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Medewerkers en onderzoekers
Onderzoekers
- Hoofdonderzoeker: Nicolas LEBOULANGER, MD, Assistance Publique - Hôpitaux de Paris
Studie record data
Bestudeer belangrijke data
Studie start
Primaire voltooiing (Werkelijk)
Studie voltooiing (Werkelijk)
Studieregistratiedata
Eerst ingediend
Eerst ingediend dat voldeed aan de QC-criteria
Eerst geplaatst (Schatting)
Updates van studierecords
Laatste update geplaatst (Schatting)
Laatste update ingediend die voldeed aan QC-criteria
Laatst geverifieerd
Meer informatie
Termen gerelateerd aan deze studie
Trefwoorden
Aanvullende relevante MeSH-voorwaarden
Andere studie-ID-nummers
- P 080606
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