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Obstructive Sleep ApneaOUI-SCINCT05391308

Overnight Upper Airway Infiltration in Spinal Cord Injury

A study testing Pre-polysomnography mesurement, Polysomnography measure and Post-polysomnography measurements in people with Obstructive Sleep Apnea and Spinal Cord Injuries, run by Assistance Publique - Hôpitaux de Paris at 1 site in France.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

Obstructive Sleep Apnea (OSA), a common disorder resulting from repetitive pharyngeal collapse during sleep, is multifactorial. Usually, OSA is considered primarily a problem of upper airway anatomy, with the craniofacial structure or neck fat decreasing the size of the pharyngeal airway lumen. Read more about this study

Who is it for?
Ages 18 years and older
Conditions the study is for
Obstructive Sleep Apnea, Spinal Cord Injuries
What is being tested?
Pre-polysomnography mesurement, Polysomnography measure and Post-polysomnography measurements
Could I receive a placebo?
No, everyone receives an active treatment
How many people
16 participants
Where
1 siteFrance
Study dates
1 Jun 2022to 27 May 2024
Phase
Interventional
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Specific criteria:
  • Low cervical (< C6), thoracic or lumbar traumatic spinal cord injury (SCI);
  • BMI < 30Kg/m² ;
  • Clinically complete SCI (AIS A) or incomplete with no walking ability;
  • Neurological level;
  • Aged >18 years;
Show all 10Show fewer
  • Patients with a previous indication for polysomnography as part of routine care and referred to sleep laboratory.
  • No-specific criteria:
  • Affiliated to the social security system;
  • Absence of serious intercurrent event.

Who cannot join

  • Specific criteria:
  • Lower limbs amputation ;
  • Treated OSA;
  • Ongoing diuretic treatment;
  • Pregnant woman;
  • Pacemaker or other (spinal) stimulation equipment.
Show all 12Show fewer
  • No-specific criteria:
  • Patient refusal;
  • Patient in a period of exclusion from another protocol;
  • Inability to sign informed consent;
  • Medical or surgical emergency context;
  • Vulnerable person or adult subject to legal protection: pregnant or lactating women, person deprived of their liberty by judicial or administrative decision, person hospitalized without consent, or admitted for purposes other than research, Articles L1121 -5 to L1121-8.

Trial locations and contacts

1 site in 1 country.

France1 site
  • Unité des pathologies du sommeil, Service de physiologie explorations fonctionelles, Hôpital Raymond Poincaré, APHP

    Garches, 92380

Other trials in France

About this study

Official title: Overnight Rostral Fluid Shift in the Pathogenesis of Obstructive Sleep Apnea in Spinal Cord Injured Patients

Obstructive Sleep Apnea (OSA), a common disorder resulting from repetitive pharyngeal collapse during sleep, is multifactorial. Usually, OSA is considered primarily a problem of upper airway anatomy, with the craniofacial structure or neck fat decreasing the size of the pharyngeal airway lumen. Obesity, male sex and genetics are well established pathogenic factors. In the last decade rostral fluid displacement (fluid shift) to explain the pathogenesis of upper airway collapsibility has been increasingly studied.

Individuals living with spinal cord injury are at increased risk for OSA, with a prevalence that is three- to fourfold higher than the general population. Individual with acute tetraplegia and undiagnosed or untreated OSA may participate less in rehabilitation due to sleepiness and fatigue and therefore be less engaged in activities that improve quality of life and maintain functioning over time. Intermittent hypoxia, sleep fragmentation and alterations of the autonomous nervous system induced by OSA are thought to delay or limit recovery and in the long term, increase cardio- and cerebrovascular morbi-mortality.

Read more

Redolfi et al have shown that overnight change in leg fluid volume correlated strongly with the Apnea Hypopnea index (AHI) and the time spent sitting. In SCI patients two mechanisms may underline fluid shift importance in the pathogenesis of OSA: first, time spent sitting is obviously increased in patients with no walking abilities (prolonged sitting position in wheelchair). Secondly, motor deficit lead to the loss of skeletal muscle pumping activity which could promote leg fluid accumulation during the day.

In our knowledge, no study has specifically assessed the impact of rostral fluid displacement on upper airway collapsibility among patients with spinal cord injury.

Better comprehension of upper airway collapsibility determinants in patients with spinal cord injury is mandatory to identify new therapeutic targets (diuretics, contention…) especially since CPAP, the first line treatment for severe OSA, continue to pose adherence issues in SCI patients. In the future, phenotyping OSA patients, especially those with SCI, will improve personalized management.

The main objective is to find if there is a correlation between the apnea-hypopnea index (AHI) and rostral fluid shift overnight, in non-obese spinal cord injured patients. The secondary aim is to find if there is a correlation between AHI and:

  • Neck circumference
  • Neck volume
  • Time spent sitting down
Read the detailed description

All SCI patients meeting inclusion criteria with scheduled polysomnography within the framework of usual care and referred to the sleep laboratory will be proposed to participate. These patients are usually recorded in a dedicated room within PMR units during a 3-day to one-week hospital stay.

Information will be given to eligible patients to allow time for reflexion before written consent is collected during the inclusion visit (during the PMR hospitalization or at the sleep laboratory to carry out the night recording).

Collection of clinical and demographic data will be performed by a PMR practitioner or sleep physician according to a predefined and standardized evaluation grid.

After consent form signature patients willing to participate will undergo "before-sleep" measurement of:

  • Leg fluid volume
  • Neck circumference
  • Neck volume
  • Short questionnaire developed for the needs of the study. Then patients will undergo a full night polysomnography according to the American Academy of sleep Medicine (AASM) guidelines.

The sleep recording will be carried out in a dedicated room within the spinal cord injury unit with the immediate proximity of a care team with specific competence in the field of the management of the heaviest patients (e.g: urinary catheterization, stool evacuation, pressure sore prevention, safe transfers, etc.).

The reading of the polysomnography will be ensured by a doctor specialized in sleep pathologies without any knowledge of the different impedance measurements, circumference and cervical volume measurements.

"After-sleep" measurement will be performed immediately after patients awakening (before any wheelchair transfer):

  • Leg fluid volume
  • Neck circumference
  • Neck volume
  • Short questionnaire developed for the needs of the study.

In summary: Before going to bed and before getting up for the first time, each patient will benefit from a standardized evaluation by measuring bioelectrical impedance on the lower limbs, 3D cervical acquisition and measurement of the neck circumference.

All of these measurements are non-invasive.

Being tested
Pre-polysomnography mesurement, Polysomnography measure, Post-polysomnography measurements
Keywords
Obstructive Sleep Apnea, spinal cord injury, Neck circumference, Neck volume, Fluid shift, Pathophysiology
Medical subject headings
Sleep Apnea, Obstructive, Spinal Cord Injuries

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Pre-polysomnography mesurementOther

    Leg fluid volume (bioelectrical impedance), neck circumference (tape measure), neck volume (3D scanner), time spent sitting down (self-reporting)

  • Polysomnography measureOther

    Apnea-Hypopnea Index

  • Post-polysomnography measurementsOther

    Leg fluid volume (bioelectrical impedance), neck circumference (tape measure), neck volume (3D scanner)

Study groups in NCT05391308
Study groupRoleWhat they receive
Experimental armExperimentalAll patients will have pre-polysomnographie and post-polysomnographie mesurement.
Receives: Other: Pre-polysomnography mesurement; Other: Polysomnography measure; Other: Post-polysomnography measurements

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Correlation coefficient between Apnea-Hypopnea Index (polysomnography) and the overnight change in leg fluid volume (bioelectrical impedance)

    AHI is used to diagnose OSA by counting respiratory events. An index greater than 5 per hour defines a ventilatory disorder.

    AHI defines severity as well, the index is:

    • Mild, between 5 and 15 per hour
    • Moderate, between 15 and 30 per hour
    • Severe, over than 30 per hour Leg fluid volume is measured by bioelectrical impedance before and after the night of polysomnography. Intra- and extracellular water are measured in L. Patient is lying down during the measure.

    Measured: 18 hours

Secondary outcomes (1)
  1. Correlation coefficient between Apnea-Hypopnea Index (polysomnography) and change in neck circumference (tape measure)

    AHI is used to diagnose OSA by counting respiratory events. An index greater than 5 per hour defines a ventilatory disorder.

    AHI defines severity as well, the index is:

    • Mild, between 5 and 15 per hour
    • Moderate, between 15 and 30 per hour
    • Severe, over than 30 per hour Neck circumference is measured by tape measure before and after the night of polysomnography. The circumference is measured at the superior border of the cricothyroid cartilage. The measure is in cm. Patient is lying down during the measure.

    Measured: 18 hours

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted25 May 2022
  2. Study start1 Jun 2022
  3. Primary completion27 May 2024
  4. Study completion27 May 2024

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Diagnosis
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrolment
16 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT05391308
Sponsor's protocol ID
APHP220159
Other IDs
2022-A00105-38
Acronym
OUI-SCI
Status last verified
Feb 2025
First submitted
12 May 2022
Last updated
3 Mar 2025
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No

Publications

  • Redolfi S, Yumino D, Ruttanaumpawan P, Yau B, Su MC, Lam J, Bradley TD. Relationship between overnight rostral fluid shift and Obstructive Sleep Apnea in nonobese men. Am J Respir Crit Care Med. 2009 Feb 1;179(3):241-6. doi: 10.1164/rccm.200807-1076OC. Epub 2008 Nov 14.

    PubMed 19011149
  • Sankari A, Vaughan S, Bascom A, Martin JL, Badr MS. Sleep-Disordered Breathing and Spinal Cord Injury: A State-of-the-Art Review. Chest. 2019 Feb;155(2):438-445. doi: 10.1016/j.chest.2018.10.002. Epub 2018 Oct 12.

    PubMed 30321507
  • Panza GS, Sutor T, Gee CM, Graco M, McCully KK, Chiodo A, Badr MS, Nash MS; American Congress of Rehabilitation Medicine, Interdisciplinary Special Interest Group, Spinal Cord Injury Physical Function and Wellness Task Force. Is Sleep Disordered Breathing Confounding Rehabilitation Outcomes in Spinal Cord Injury Research? Arch Phys Med Rehabil. 2022 May;103(5):1034-1045. doi: 10.1016/j.apmr.2021.08.015. Epub 2021 Sep 17.

    PubMed 34537222
  • Bailly S, Grote L, Hedner J, Schiza S, McNicholas WT, Basoglu OK, Lombardi C, Dogas Z, Roisman G, Pataka A, Bonsignore MR, Pepin JL; ESADA Study Group. Clusters of sleep apnoea phenotypes: A large pan-European study from the European Sleep Apnoea Database (ESADA). Respirology. 2021 Apr;26(4):378-387. doi: 10.1111/resp.13969. Epub 2020 Nov 2.

    PubMed 33140467
  • Proserpio P, Lanza A, Sambusida K, Fratticci L, Frigerio P, Sommariva M, Stagni EG, Redaelli T, De Carli F, Nobili L. Sleep apnea and periodic leg movements in the first year after spinal cord injury. Sleep Med. 2015 Jan;16(1):59-66. doi: 10.1016/j.sleep.2014.07.019. Epub 2014 Oct 7.

    PubMed 25454844
  • Popa C, Popa F, Grigorean VT, Onose G, Sandu AM, Popescu M, Burnei G, Strambu V, Sinescu C. Vascular dysfunctions following spinal cord injury. J Med Life. 2010 Jul-Sep;3(3):275-85.

    PubMed 20945818
  • Redolfi S, Arnulf I, Pottier M, Lajou J, Koskas I, Bradley TD, Similowski T. Attenuation of obstructive sleep apnea by compression stockings in subjects with venous insufficiency. Am J Respir Crit Care Med. 2011 Nov 1;184(9):1062-6. doi: 10.1164/rccm.201102-0350OC.

    PubMed 21836140
  • Murata J, Murata S, Yamagata S, Ohyama M, Kogo H, Umeki N. The attenuating effect of a dynamic cushion on the development of leg edema in wheelchair users with spinal cord injuries. Technol Health Care. 2020;28(4):447-452. doi: 10.3233/THC-192045.

    PubMed 31958103
  • Viaene A, Roggeman S, Goessaert AS, Kessler TM, Mehnert U, Besien VV, De Muynck M, Everaert K. Conservative treatment for leg oedema and the effect on nocturnal polyuria in patients with spinal cord injury. BJU Int. 2019 May;123(5A):E43-E50. doi: 10.1111/bju.14672. Epub 2019 Feb 6.

    PubMed 30653810
  • Leotard A, Levy J, Perennou D, Pepin JL, Lofaso F, Bensmail D, Lebret M, Baillieul S. Sleep might have a pivotal role in rehabilitation medicine: A road map for care improvement and clinical research. Ann Phys Rehabil Med. 2021 Jul;64(4):101392. doi: 10.1016/j.rehab.2020.04.006. Epub 2020 Oct 14. No abstract available.

    PubMed 32445976
  • Berry RB, Brooks R, Gamaldo C, Harding SM, Lloyd RM, Quan SF, Troester MT, Vaughn BV. AASM Scoring Manual Updates for 2017 (Version 2.4). J Clin Sleep Med. 2017 May 15;13(5):665-666. doi: 10.5664/jcsm.6576. No abstract available.

    PubMed 28416048
  • Kaminska M, Jobin V, Mayer P, Amyot R, Perraton-Brillon M, Bellemare F. The Epworth Sleepiness Scale: self-administration versus administration by the physician, and validation of a French version. Can Respir J. 2010 Mar-Apr;17(2):e27-34. doi: 10.1155/2010/438676.

    PubMed 20422065

Questions about this trial

What is this clinical trial studying?

A study testing Pre-polysomnography mesurement, Polysomnography measure and Post-polysomnography measurements in people with Obstructive Sleep Apnea and Spinal Cord Injuries, run by Assistance Publique - Hôpitaux de Paris at 1 site in France.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 10 inclusion and 12 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 3 Mar 2025. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in France. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Correlation coefficient between Apnea-Hypopnea Index (polysomnography) and the overnight change in leg fluid volume (bioelectrical impedance) (time frame: 18 hours). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT05391308, which also lists 12 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 3 Mar 2025.

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