Clinical Trial: Acoustic Reflection Method and Work of Breathing
Study Status: Terminated
Recruit Status: Terminated
Study Type: Interventional
Official Title: Acoustic Reflection Method and Work of Breathing : Two New Methods to Measure Children's Upper Airway Obstruction
Brief Summary:
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.
Detailed Summary:
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.
Sponsor: Assistance Publique - Hôpitaux de Paris
Current Primary Outcome: To compare the importance and the localisation of the UAO assessed by the acoustic reflection method and by the endoscopic evaluation under general anaesthesia [ Time Frame: At the inclusion visit ]
Original Primary Outcome: Same as current
Current Secondary Outcome:
- To evaluate the feasibility of the acoustic method for the evaluation of UAO in children [ Time Frame: At the inclusion visit ]
- 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 [ Time Frame: At the inclusion visit ]
- To compare the importance of the UAO assessed by the acoustic reflection method with the measurements of the work of breathing [ Time Frame: At the inclusion visit ]
- 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 [ Time Frame: At the inclusion visit ]
- To correlate the importance and the localisation of the UAO assessed by the acoustic reflection method with the outcome of surgery if required [ Time Frame: At the inclusion and 3 months visits ]
Original Secondary Outcome: Same as current
Information By: Assistance Publique - Hôpitaux de Paris
Dates:
Date Received: July 30, 2009
Date Started: December 2009
Date Completion:
Last Updated: December 26, 2011
Last Verified: August 2011
