NCT06331819

Brief Summary

The goal of this prospective cohort study is to study patients referred for sleep study by in-lab polysomnography in the Jordan University Hospital and the Jordan Hospital or with an at-home sleep study kit. The main aims are:

  • To prospectively obtain demographic and clinical information of patients referred for a sleep study.
  • To determine the diagnostic value of facial discoloration as potential marker for obstructive sleep apnea to increase detection rate for the condition.
  • To establish a correlation between obstructive sleep apnea and vasovagal symptoms with resulting increased smoking tendency and study the effect of treatment on the disorders.
  • To determine the association between timing of appearance of obstructive sleep apnea symptoms and initiation of smoking.

Trial Health

57
Monitor

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Trial has exceeded expected completion date
Enrollment
200

participants targeted

Target at P75+ for all trials

Timeline
Completed

Started Mar 2024

Geographic Reach
1 country

1 active site

Status
recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

March 7, 2024

Completed
3 days until next milestone

Study Start

First participant enrolled

March 10, 2024

Completed
16 days until next milestone

First Posted

Study publicly available on registry

March 26, 2024

Completed
1.8 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

January 1, 2026

Completed
2 months until next milestone

Study Completion

Last participant's last visit for all outcomes

March 1, 2026

Completed
Last Updated

September 19, 2024

Status Verified

September 1, 2024

Enrollment Period

1.8 years

First QC Date

March 7, 2024

Last Update Submit

September 7, 2024

Conditions

Keywords

Obstructive Sleep ApneaVasovagal SyncopeFacial DiscolorationAcanthosis NigricansSmoking CessationJordanIn-Lab Polysomnography

Outcome Measures

Primary Outcomes (4)

  • Clinical association between obstructive sleep apnea and presence of facial pigmentation

    Number of patients with a confirmed diagnosis of OSA by in-lab polysomnography or at-home sleep study and the presence of pigmentation on the face.

    Immediate after sleep study result

  • Clinical association between obstructive sleep apnea and severity of facial pigmentation

    Grade of facial pigmentation in comparison with normal skin tone as low, moderate, or high in patients with a confirmed diagnosis of OSA by in-lab polysomnography or at-home sleep study.

    Immediate after sleep study result

  • Relation between obstructive sleep apnea and vasovagal symptoms

    Presence of vasovagal symptoms in patients with a confirmed diagnosis of OSA by in-lab polysomnography or at-home sleep study.

    6 months

  • Relation between obstructive sleep apnea and resulting smoking tendency due to vasovagal symptoms

    Frequency of smokers in patients with a confirmed diagnosis of OSA by in-lab polysomnography or at-home sleep study.

    6 months

Secondary Outcomes (3)

  • Relation between obstructive sleep apnea and the effect of treatment on facial discolouration

    6 months

  • Relation between obstructive sleep apnea and the effect of treatment on vasovagal symptoms

    6 months

  • Relation between obstructive sleep apnea and the effect of treatment on smoking habits

    6 months

Study Arms (1)

Patients

Patients referred for sleep study by in-lab polysomnography to enrolled hospitals and those provided with an at-home sleep study kit.

Diagnostic Test: In-lab polysomnographyDevice: Continuous positive airway pressureDiagnostic Test: Home sleep study device

Interventions

In-lab polysomnographyDIAGNOSTIC_TEST

Patient's brainwaves are recorded overnight to diagnose sleep disorder.

Also known as: Sleep study
Patients

A machine that uses air pressure to keep breathing airways open while patients sleep.

Also known as: CPAP
Patients

Patient's brainwaves are recorded overnight to diagnose sleep disorder.

Patients

Eligibility Criteria

Age18 Years+
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)
Sampling MethodNon-Probability Sample
Study Population

The target population is patients above the age of 18 referred for sleep study at referred hospital. Patients who agree to participate in this study must sign the consent form.

You may qualify if:

  • Patients within age limit who agree to participate and sign the consent form.

You may not qualify if:

  • Patients with prior diagnosis of obstructive sleep apnea by sleep study.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

The University of Jordan

Amman, 11942, Jordan

RECRUITING

Related Publications (14)

  • Benjafield AV, Ayas NT, Eastwood PR, Heinzer R, Ip MSM, Morrell MJ, Nunez CM, Patel SR, Penzel T, Pepin JL, Peppard PE, Sinha S, Tufik S, Valentine K, Malhotra A. Estimation of the global prevalence and burden of obstructive sleep apnoea: a literature-based analysis. Lancet Respir Med. 2019 Aug;7(8):687-698. doi: 10.1016/S2213-2600(19)30198-5. Epub 2019 Jul 9.

    PMID: 31300334BACKGROUND
  • Bonsignore MR, Saaresranta T, Riha RL. Sex differences in obstructive sleep apnoea. Eur Respir Rev. 2019 Nov 6;28(154):190030. doi: 10.1183/16000617.0030-2019. Print 2019 Dec 31.

    PMID: 31694839BACKGROUND
  • Eckert DJ, Malhotra A, Jordan AS. Mechanisms of apnea. Prog Cardiovasc Dis. 2009 Jan-Feb;51(4):313-23. doi: 10.1016/j.pcad.2008.02.003.

    PMID: 19110133BACKGROUND
  • White DP. Pathogenesis of obstructive and central sleep apnea. Am J Respir Crit Care Med. 2005 Dec 1;172(11):1363-70. doi: 10.1164/rccm.200412-1631SO. Epub 2005 Aug 11.

    PMID: 16100008BACKGROUND
  • Green ME, Bernet V, Cheung J. Thyroid Dysfunction and Sleep Disorders. Front Endocrinol (Lausanne). 2021 Aug 24;12:725829. doi: 10.3389/fendo.2021.725829. eCollection 2021.

    PMID: 34504473BACKGROUND
  • Ioannidou D, Kalamaras G, Kotoulas SC, Pataka A. Smoking and Obstructive Sleep Apnea: Is There An Association between These Cardiometabolic Risk Factors?-Gender Analysis. Medicina (Kaunas). 2021 Oct 20;57(11):1137. doi: 10.3390/medicina57111137.

    PMID: 34833356BACKGROUND
  • Schrand JR. Is sleep apnea a predisposing factor for tobacco use? Med Hypotheses. 1996 Dec;47(6):443-8. doi: 10.1016/s0306-9877(96)90155-3.

    PMID: 8961240BACKGROUND
  • Gozal D, Ham SA, Mokhlesi B. Sleep Apnea and Cancer: Analysis of a Nationwide Population Sample. Sleep. 2016 Aug 1;39(8):1493-500. doi: 10.5665/sleep.6004.

    PMID: 27166241BACKGROUND
  • Soundararajan V, Lor J, Fishbein AB. Sleep Apnea and Skin. Curr Sleep Med Rep. 2020 Sep;6(3):94-100. doi: 10.1007/s40675-020-00179-7. Epub 2020 Aug 25.

    PMID: 33767945BACKGROUND
  • Tien KJ, Chou CW, Lee SY, Yeh NC, Yang CY, Yen FC, Wang JJ, Weng SF. Obstructive sleep apnea and the risk of atopic dermatitis: a population-based case control study. PLoS One. 2014 Feb 25;9(2):e89656. doi: 10.1371/journal.pone.0089656. eCollection 2014.

    PMID: 24586942BACKGROUND
  • Jeanmonod R, Sahni D, Silberman M. Vasovagal Episode. 2023 Jul 17. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2025 Jan-. Available from http://www.ncbi.nlm.nih.gov/books/NBK470277/

    PMID: 29262088BACKGROUND
  • Puel V, Pepin JL, Gosse P. Sleep related breathing disorders and vasovagal syncope, a possible causal link? Int J Cardiol. 2013 Sep 30;168(2):1666-7. doi: 10.1016/j.ijcard.2013.03.061. Epub 2013 Apr 23. No abstract available.

    PMID: 23623670BACKGROUND
  • Willis FB, Isley AL, Geda YE, Shaygan A, Quarles L 4th, Fredrickson PA. Resolution of syncope with treatment of sleep apnea. J Am Board Fam Med. 2008 Sep-Oct;21(5):466-8. doi: 10.3122/jabfm.2008.05.070274.

    PMID: 18772302BACKGROUND
  • Tayade MC, Kulkarni NB. The effect of smoking on the cardiovascular autonomic functions: a cross sectional study. J Clin Diagn Res. 2013 Jul;7(7):1307-10. doi: 10.7860/JCDR/2013/5526.3133. Epub 2013 Jul 1.

    PMID: 23998052BACKGROUND

MeSH Terms

Conditions

Sleep Apnea, ObstructiveSyncope, VasovagalSmokingAcanthosis NigricansSmoking Cessation

Interventions

PolysomnographyContinuous Positive Airway Pressure

Condition Hierarchy (Ancestors)

Sleep Apnea SyndromesApneaRespiration DisordersRespiratory Tract DiseasesSleep Disorders, IntrinsicDyssomniasSleep Wake DisordersNervous System DiseasesOrthostatic IntolerancePrimary DysautonomiasAutonomic Nervous System DiseasesSyncopeUnconsciousnessConsciousness DisordersNeurobehavioral ManifestationsNeurologic ManifestationsSigns and SymptomsPathological Conditions, Signs and SymptomsBehaviorMelanosisHyperpigmentationPigmentation DisordersSkin DiseasesSkin and Connective Tissue DiseasesHealth Behavior

Intervention Hierarchy (Ancestors)

Monitoring, PhysiologicDiagnostic Techniques and ProceduresDiagnosisPositive-Pressure RespirationRespiration, ArtificialAirway ManagementTherapeuticsRespiratory Therapy

Study Officials

  • Rand M Zaqqa

    Jordan University Hospital

    PRINCIPAL INVESTIGATOR

Central Study Contacts

Study Design

Study Type
observational
Observational Model
COHORT
Time Perspective
PROSPECTIVE
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

March 7, 2024

First Posted

March 26, 2024

Study Start

March 10, 2024

Primary Completion

January 1, 2026

Study Completion

March 1, 2026

Last Updated

September 19, 2024

Record last verified: 2024-09

Locations