An observational study in Obstructive Sleep Disordered Breathing, sponsored by Université Catholique de Louvain. Recruiting at 1 site in Belgium. Open to participants aged 4 Years to 17 Years. Per ClinicalTrials.gov, last updated 2026-11-04.
Sponsored by Université Catholique de Louvain · Observational
This study investigates the hypothesis that, in children, tongue motor functions can predict both the anatomical site and the degree of upper airway obstruction contributing to obstructive sleep-disordered breathing.
Patients will be enrolled during their visit to the ENT physician. Subsequently, their tongue motor functions will be assessed during their pre-surgical appointment. Finally, they will undergo a drug-induced sleep endoscopy prior to their surgery.
2,240 studies on the registry are indexed under Sleep Apnea, Obstructive; 475 are open to participants now.
This study's planned enrollment of 48 is below the median of 105 across 666 observational studies indexed under Sleep Apnea, Obstructive.
Browse Sleep Apnea, Obstructive studies →Université Catholique de Louvain is the lead sponsor of 154 studies on the registry; 59 are open to participants now.
Counted across the registry records on this site, refreshed daily.
The criteria were revised on the registry on Nov 4, 2026. See what changed
Participants will be recruited during ENT consultations.
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Exclusion Criteria:
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.
Contraindication
A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Other: Physiotherapist assessment · Other: ENT assessment · Diagnostic Test: Drug-Induced Sleep Endoscopy
* Tongue motor skills (Tongue pressures and tongue mobility, assessed through the Iowa Oral Performance Instrument and the Motricité Bucco-Linguo-Faciale tongue subscore, respectively) * Tongue restriction of mobility due to its frenulum (assessed through the Quick Tongue-Tie assessment tool) * Breathing Pattern (questionnaire from Abreu RR, Rocha RL, Lamounier JA, Guerra AF. Etiology, clinical manifestations and concurrent findings in mouth-breathing children. J Pediatr (Rio J). 2008;84(6):529-535.).
Data from the ENT appointment will be collected (e.g., sex, height, weight)
A Drug-Induced Sleep Endoscopy will be performed, recorded, and evaluated by two blinded raters using the IPSES scale.
Extent of tongue base obstruction
Evaluated through the IPSES scoring during a Drug Induced Sleep Endoscopy (DISE)
Time frame: During the planned surgery
Breathing pattern
Presence or absence of mouth breathing will be assessed with the mouth breathing questionnaire from Abreu et al. (2018).
Time frame: During the pre-surgical appointment
Tongue mobility (MBLF score)
Assessed through the Motricité Bucco-Linguo-Faciale (MBLF) tongue test score
Time frame: During the pre-surgical appointment
Tongue pressures (kPa)
Tongue pressures will be measured with the Iowa Oral Performance Instrument (IOPI), in kPa, during a protrusion, an elevation, and a swallowing task.
Time frame: During the pre-surgical appointment
Tongue mobility restriction due to its frenulum ratio (%)
The ratio between the maximal comfortable mouth opening, with the tongue tip to the incisive papilla, and the maximal comfortable mouth opening, will be computed.
Time frame: During the pre-surgical appointment
Plan to share: No
No publications or documents are linked to this record.
From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗
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