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Sleep Apnea SyndromesVISTAO2NCT01135303

Effectiveness of VistaO2 Device in Screening of Sleep Apnea/Hypopnea Syndrome

A study testing VistaO2 device in people with Sleep Apnea Syndromes, run by Centre Hospitalier Universitaire de Saint Etienne at 2 sites 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

The high prevalence (9% in men and 4% in women) of sleep apnea / hypopnea syndrome (SAHS) in adults is now well documented as well as its cardiovascular repercussions. Previous studies showed a conclusive link between SAHS and severe cardiovascular diseases such as hypertension, myocardial infarction, heart failure… Read more about this study

Who is it for?
Ages 18 to 80 years
Conditions the study is for
Sleep Apnea Syndromes
What is being tested?
VistaO2 device
Type of treatment
Medical device
Could I receive a placebo?
No, everyone receives an active treatment
How many people
182 participants
Where
2 sitesFrance
Study dates
Feb 2009to Jan 2011
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 to 80 years
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • sleep apnea hypopnea syndrome suspicion
  • written consent

Who cannot join

  • pacemaker
  • diabetes
  • atrial fibrillation
  • electrode allergy

Trial locations and contacts

2 sites in 1 country.

France2 sites
  • Hôpital TENON - APHP

    Paris, 75000

  • CHU de Saint-Etienne

    Saint-Etienne, 42055

Other trials in France

About this study

The high prevalence (9% in men and 4% in women) of sleep apnea / hypopnea syndrome (SAHS) in adults is now well documented as well as its cardiovascular repercussions. Previous studies showed a conclusive link between SAHS and severe cardiovascular diseases such as hypertension, myocardial infarction, heart failure and stroke.Then, SAHS is a public health issue in adults.

In this context, early detection of such a disease is crucial if the management is tailored to the patient, the practitioner's choice of therapy moving towards continuous positive airway pressure (CPAP) or mandibular advancement device. The detection is based on full nocturnal polysomnography or polygraphic recordings. Polysomnography remains the gold standard but it is a time consuming and costly examination. Polygraphic recording is a test that allows simplified the diagnosis of severe patients, but may not be sufficient for mild form of SAHS. Thus, the SAHS is a pathology under-diagnosed and under-treated. The validation of a technique for identifying patients most at risk to either limit the number of polysomnographic examination is requested.

Read the detailed description

In this perspective, the development of a product screening sleep related breathing disorders for physicians, cardiologists, internists (not specialized sleep experts) would fill this need. It allows for a reliable first screening for their patients in parallel with a routine cardiological examination. Imposing a minimal human and material, the ECG Holter recorder "VistaO2" (NOVACOR, Rueil-Malmaison, France) is a device designed to meet these requirements. This device fits into the daily management of patients with cardiac arrhythmias or sinus/atrioventricular conduction disorders, and of patients suffering myocardial infarction (arrhythmic risk stratification, detection of silent myocardial ischemia).

Analysis of heart rate variability (HRV) has already shown interest in screening SAHS. We therefore wish to evaluate the performance of the analysis of data from the screening tool VistaO2 face what the gold standard synchronized polysomnography.

Being tested
VistaO2 device
Keywords
Sleep Apnea Syndromes, Polysomnography, Holter ECG, Thoracic impedance, Heart rate variability
Medical subject headings
Sleep Apnea Syndromes

What participants receive

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

  • VistaO2 deviceDevice

    Also called VistaO2 : ECG Holter recorder (Novacor, Rueil-Malmaison, France).

    Full night VistaO2 device monitoring synchronized with the gold standard polysomnography.

Study groups in NCT01135303
Study groupRoleWhat they receive
VistaO2 deviceExperimentalThis device combines the transcutaneous oxyhemoglobin saturation (allowing to compute the oxyhemoglobin desaturation index), the slow variations in heart rate and an index of nocturnal respiratory events calculated by analyzing the movements of the chest performed by chest impedance variations.
Receives: Device: VistaO2 device

What is being measured

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

  1. Sleep apnea hypopnea syndrome

    Apnea hypopnea index higher than 15, evaluated by polysomnography.

    Measured: Day 1

Timeline

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

  1. First posted2 Jun 2010 (estimated)
  2. Study startFeb 2009
  3. Primary completionJan 2011
  4. Study completionJan 2011

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
182 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT01135303
Sponsor's protocol ID
0808119
Other IDs
2008-A01530-55
Acronym
VISTAO2
Status last verified
Jul 2011
First submitted
25 May 2010
Last updated
21 Jul 2011
Results posted
No
Data monitoring committee
No

Publications

  • Chouchou F, Poupard L, Philippe C, Court-Fortune I, Barthelemy JC, Roche F. Thoracic impedance, in association with oximetry, in a multi-modal ECG Holter system is useful for screening sleep disordered breathing. Int J Cardiol. 2013 Feb 10;163(1):100-2. doi: 10.1016/j.ijcard.2012.06.082. Epub 2012 Jul 16. No abstract available.

    PubMed 22805548

Questions about this trial

What is this clinical trial studying?

A study testing VistaO2 device in people with Sleep Apnea Syndromes, run by Centre Hospitalier Universitaire de Saint Etienne at 2 sites 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 2 inclusion and 4 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 21 Jul 2011. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 2 sites 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?

Sleep apnea hypopnea syndrome (time frame: Day 1). 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 NCT01135303, which also lists 1 linked publication.

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 21 Jul 2011.

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