Apnea Hypopnea Index Severity Versus Head Position During Sleep
NCT ID: NCT04086407
Last Updated: 2020-06-30
Study Results
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View full resultsBasic Information
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COMPLETED
NA
8 participants
INTERVENTIONAL
2016-11-28
2017-11-30
Brief Summary
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Detailed Description
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It is well documented that trunk position significantly affects the severity of OSA. In fact, 50-75% of individuals with a diagnosis of OSA show supine predominance or worsened apnea-hypopnea index (AHI) when sleeping in the supine position. Positional Obstructive Sleep Apnea (POSA) is defined as an AHI ≥5 with \>50% AHI reduction between the supine and non-supine positions and AHI. Studies show 49.5% of individuals with mild OSA (AHI 5-15), 19.4% with moderate OSA (AHI 15-30) and 6.5% in severe OSA (AHI \> 30) had POSA. Due to this high prevalence of POSA, especially in the mild and moderate OSA populations, positional therapies have been developed and researched.
In this clinical trial, if only the head position is considered, all subjects are positional sensitive and OSA severity can be calculated and consistently minimized by limiting the allowable range of head roll angle during sleep. Ten subjects underwent a standard polysomnography with an additional head angle sensor and coached to fall asleep in various head positions. Torso position was changed between supine and non-supine for a given head roll angle epoch to show the OSA severity change with torso position. Each sleep epoch of unique head pitch and roll angle was scored individually for AHI and Oxygen Saturation (SPO2) de-saturation.
Investigators hypothesize that specific head roll angles independent of torso position will significantly reduce AHI and SpO2 desaturation severity in patients. The primary aim is to determine the head roll angles that significantly improve POSA independent of torso position. By doing this, Investigators believe to identify a "safe zone" of head roll angles that improve POSA and that can be used to support the development of head positional therapy for POSA patients.
Conditions
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Study Design
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NA
SINGLE_GROUP
BASIC_SCIENCE
NONE
Study Groups
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Forehead sensor recording precision head pitch and roll angle
During an overnight polysomnography, participants were coached by sleep research technologists to sleep with their head in positions hypothesized to minimize apnea severity ≤20⁰ or ≥160⁰, and those hypothesized to maximize apnea severity between 30⁰ and 150⁰. Head roll angles were measured and recorded by the participant's forehead sensor attached with adhesive and tape. Extreme head positions were attempted with the torso in both supine and non-supine positions so show insensitivity to torso position. A custom interface was developed to maintain compatibility with specific bedside polysomnography recorder auxiliary inputs. Sleep epochs were considered those where the subject slept for at least 10 minutes. Each head position epoch was analyzed for apnea hypopnea index and oxygen desaturation.
Dual-axis inclinometer attached to the subject's forehead with tape
This is the first clinical trial in the industry to address OSA symptom severity and snoring as a direct function of head pitch and roll angle. The head pitch and roll angle can be used with high consistency to predict OSA symptom severity. The apnea equation is based on the gravitational crush forces of the mass of the tongue and nearby tissue on the upper air way and is valid for most OSA sufferers.
Interventions
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Dual-axis inclinometer attached to the subject's forehead with tape
This is the first clinical trial in the industry to address OSA symptom severity and snoring as a direct function of head pitch and roll angle. The head pitch and roll angle can be used with high consistency to predict OSA symptom severity. The apnea equation is based on the gravitational crush forces of the mass of the tongue and nearby tissue on the upper air way and is valid for most OSA sufferers.
Eligibility Criteria
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Inclusion Criteria
* Participant is diagnosed with Positional Obstructive Sleep Apnea
* Participant age is between 21 and 60 years
* If currently on Positive Air Pressure (PAP) therapy, is able to produce compliance data within the last week before screening visit
* Is able to follow directions during the overnight sleep study
* If currently on PAP therapy participant self-report that excessive daytime sleepiness persists when PAP therapy is not in use
* Able to be of "PAP" therapy for 4 nights
Exclusion Criteria
* Chronic ear infections
* Persistent neck "pains"
* Persistent chronic posture physical issues
* Previous C-Spine fusion
* History of Cardiac Arrythmia
* History of seizures
* Allergic to Standard Tape used in Sleep Centers
* Non-English speaking.
* Hospitalization within the previous 4 weeks
* Use of antibiotics or steroids within the previous 4 weeks
* Any major uncontrolled disease or condition, such as congestive heart failure, malignancy, end-stage heart disease, end-stage heart disease. Arterial Laterial Sclerosis (ALS), or sever stroke, or other condition as deemed appropriate by investigator as determined by review of medical history and/or participant reported medical history
* History of severe osteoporosis
* Excessive alcohol intake (\> 6oz hard liquor, 48 oz beer or 20 oz wine daily), or illicit drug use by review of medical history and/or participant reported medical history
* Daily use of prescribed narcotics (greater than 30 mg morphine equivalent)
21 Years
60 Years
ALL
Yes
Sponsors
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New England IRB
UNKNOWN
Mass Lung and Allergy, PC
UNKNOWN
Sleep Systems
INDUSTRY
Responsible Party
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Principal Investigators
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Stacia Sailer, MD
Role: PRINCIPAL_INVESTIGATOR
Mass Lung and Allergy
Payam Aghazzi, MD
Role: PRINCIPAL_INVESTIGATOR
Mass Lung and Allergy
Locations
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Mass Lung and Allergy
Worcester, Massachusetts, United States
Countries
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References
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Ravesloot MJ, van Maanen JP, Dun L, de Vries N. The undervalued potential of positional therapy in position-dependent snoring and obstructive sleep apnea-a review of the literature. Sleep Breath. 2013 Mar;17(1):39-49. doi: 10.1007/s11325-012-0683-5. Epub 2012 Mar 24.
Epstein LJ, Kristo D, Strollo PJ Jr, Friedman N, Malhotra A, Patil SP, Ramar K, Rogers R, Schwab RJ, Weaver EM, Weinstein MD; Adult Obstructive Sleep Apnea Task Force of the American Academy of Sleep Medicine. Clinical guideline for the evaluation, management and long-term care of obstructive sleep apnea in adults. J Clin Sleep Med. 2009 Jun 15;5(3):263-76.
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Cartwright R, Ristanovic R, Diaz F, Caldarelli D, Alder G. A comparative study of treatments for positional sleep apnea. Sleep. 1991 Dec;14(6):546-52. doi: 10.1093/sleep/14.6.546.
Cartwright RD, Lloyd S, Lilie J, Kravitz H. Sleep position training as treatment for sleep apnea syndrome: a preliminary study. Sleep. 1985;8(2):87-94. doi: 10.1093/sleep/8.2.87.
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Permut I, Diaz-Abad M, Chatila W, Crocetti J, Gaughan JP, D'Alonzo GE, Krachman SL. Comparison of positional therapy to CPAP in patients with positional obstructive sleep apnea. J Clin Sleep Med. 2010 Jun 15;6(3):238-43.
Eijsvogel MM, Ubbink R, Dekker J, Oppersma E, de Jongh FH, van der Palen J, Brusse-Keizer MG. Sleep position trainer versus tennis ball technique in positional obstructive sleep apnea syndrome. J Clin Sleep Med. 2015 Jan 15;11(2):139-47. doi: 10.5664/jcsm.4460.
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van Maanen JP, Richard W, Van Kesteren ER, Ravesloot MJ, Laman DM, Hilgevoord AA, de Vries N. Evaluation of a new simple treatment for positional sleep apnoea patients. J Sleep Res. 2012 Jun;21(3):322-9. doi: 10.1111/j.1365-2869.2011.00974.x. Epub 2011 Oct 22.
Levendowski DJ, Seagraves S, Popovic D, Westbrook PR. Assessment of a neck-based treatment and monitoring device for positional obstructive sleep apnea. J Clin Sleep Med. 2014 Aug 15;10(8):863-71. doi: 10.5664/jcsm.3956.
Ravesloot MJL, White D, Heinzer R, Oksenberg A, Pepin JL. Efficacy of the New Generation of Devices for Positional Therapy for Patients With Positional Obstructive Sleep Apnea: A Systematic Review of the Literature and Meta-Analysis. J Clin Sleep Med. 2017 Jun 15;13(6):813-824. doi: 10.5664/jcsm.6622.
van Kesteren ER, van Maanen JP, Hilgevoord AA, Laman DM, de Vries N. Quantitative effects of trunk and head position on the apnea hypopnea index in obstructive sleep apnea. Sleep. 2011 Aug 1;34(8):1075-81. doi: 10.5665/SLEEP.1164.
Gandotra K, May A, Auckley D. Variable Response to CPAP in a Case of Severe Obstructive Sleep Apnea: An Unusual Cause. J Clin Sleep Med. 2018 Jan 15;14(1):145-148. doi: 10.5664/jcsm.6904.
Safiruddin F, Koutsourelakis I, de Vries N. Analysis of the influence of head rotation during drug-induced sleep endoscopy in obstructive sleep apnea. Laryngoscope. 2014 Sep;124(9):2195-9. doi: 10.1002/lary.24598. Epub 2014 Mar 1.
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Provided Documents
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Document Type: Informed Consent Form
Document Type: Study Protocol
Related Links
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Informational website for positional treatment using head pitch and roll angles measuring AHI
Other Identifiers
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Apnea Guard - 1400
Identifier Type: -
Identifier Source: org_study_id
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