Diaphragmatic Paralysis, Healthy Volunteers
Conditions
Keywords
structured light plethysmography, sonar, transdiaphragmatic pressure
Brief summary
this study aim to evaluate wether new, non-invasive and non-contact devices such as Structured Light Plethysmography (SLP) and Sonar would be able to accurately detect and quantify diaphragm dysfunction (mono-or-bilateral) by assessing the asymmetric chest wall motion generated during spontaneous breathing as compared with a classic, standard and invasive technique.
Detailed description
The measurements of chest and abdominal wall movements during quiet tidal breathing will be performed simultaneously using SLP and Sonar devices. Subjects will be asked to sit down on a chair with their neck in a neutral position and their back as straight as possible. The SLP and the Sonar will be lined up to project the grid of light and the ultrasonic wave sonar over the participant's chest and abdomen. Data will be collected during 5 minutes of tidal breathing. The same procedure will be repeated while having the patient lying down in supine position on the same chair for 5 additional minutes. During both sessions (sitting and supine), patients will be asked to perform a gentle inspiratory capacity (IC) maneuver to better appreciate the thoraco-abdominal asymmetry and distortion.
Interventions
DEVICESonar
Measurements of chest wall and abdominal wall movement will be performed while subjects are breathing quietly
DEVICEStructured light plethysmography (SLP)
Measurements of chest wall and abdominal wall movement will be performed while subjects are breathing quietly
Sponsors
Association pour le Développement et l'Organisation de la Recherche en Pneumologie et sur le Sommeil
Study design
Observational model
COHORT
Time perspective
PROSPECTIVE
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
Yes
Inclusion criteria
FOR HEALTHY VOLUNTEERS Inclusion Criteria: * no respiratory disease * no neurologic disease * no thoracic deformation
Exclusion criteria
* respiratory disease * neurologic disease * thoracic deformation FOR PATIENTS Inclusion Criteria: * patients with a suspicion of diaphragmatic dysfunction
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| amplitude of displacement of thoraco-abdominal compartments | 10 minutes | asymmetry of displacement of thoraco-abdominal compartments during tidal breathing and respiratory manoeuvres |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| displacement speed of thoraco-abdominal compartments | 10 minutes | asynchrony of displacement of thoraco-abdominal compartments during tidal breathing and respiratory manoeuvres measurement |
Countries
France
Outcome results
None listed