NCT05362890

Brief Summary

Hypothesis: Patients with obstructive sleep apnea syndrome (OSAS) have cochlear receptor cells damage because of prolonged, recurrent hypoxia. The use of devices operating under the continous positive airway pressure (CPAP) leads to the recovery of cochlear receptor cells. Aims:

  1. 1.To determinate whether there is cochlear receptor cells damage in OSAS patients depending on the degree of the disease
  2. 2.Investigate whether the use of ventilation devices with continuous positive pressure and constant oxygen pressure in the airways can lead to the recovery of the cochlear receptor cells Participants and Methods: The investigation work will be designed as original scientific research- prospective cohort study at Department od Otorhinolaryngology and Head and Neck Surgery, University Hospital Center Osijek.

Trial Health

43
At Risk

Trial Health Score

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

Trial has exceeded expected completion date
Enrollment
45

participants targeted

Target at P25-P50 for not_applicable

Timeline
Completed

Started May 2022

Typical duration for not_applicable

Geographic Reach
1 country

1 active site

Status
unknown

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

Trial Relationships

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Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

April 27, 2022

Completed
5 days until next milestone

Study Start

First participant enrolled

May 2, 2022

Completed
3 days until next milestone

First Posted

Study publicly available on registry

May 5, 2022

Completed
1.9 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

April 1, 2024

Completed
7 months until next milestone

Study Completion

Last participant's last visit for all outcomes

November 1, 2024

Completed
Last Updated

January 24, 2024

Status Verified

October 1, 2023

Enrollment Period

1.9 years

First QC Date

April 27, 2022

Last Update Submit

January 23, 2024

Conditions

Keywords

Obstructive Sleep ApneaCochlear receptor cellsHearingCPAP deviceHypoxia

Outcome Measures

Primary Outcomes (1)

  • Hearing test Otoacoustic Emission (TEOAE and DPOAE)

    Objective analysis of hearing using otoacoustic emission in decibels. It is an objective method; it is performed by placing a probe with a plastic insertion into the subject's external ear canal and by recording the returning sound (an echo) with a sensitive microphone; the echo occurs in cases where the middle ear and cochlea i.e. cochlear receptor cells are healthy; the TEOAE shows the status of the whole cochlea, while the DPOAE examines more specific frequency regions.

    45 minutes for each participant initialy and then after six to eight months of using device new measurement

Study Arms (2)

Patients with obstructive sleep apnea

EXPERIMENTAL

Patients with OSAS who have been previously examined by a neurologist for sleep disorders, have undergone polysomnography, and have been diagnosed with moderate severe obstructive sleep apnea according to the AHI index

Device: DEVICE OPERATING UNDER THE CONTINOUS POSITIVE AIRWAY PRESSURE

Control Group

NO INTERVENTION

The control group will consist of subjects in whom specific questionnaires excluded the existence of obstructive sleep apnea.

Interventions

The principle of operation is to prevent the closure and the narrowing of the structures of the upper respiratory tract by applying positive pressure. The device consists of a mask that protects the nose and/or mouth, a tube that connects the mask to the monitor and a monitor that blows air into the tube. A pressure in the range of 4 to 20 cm water is applied, depending on the individual needs of the patient to keep the airway open. The use is considered to be effective when the patient uses it continuously for at least 4 hours at bedtime. Today's modern devices have memory cards for storing data on the regularity and time of use of the device during the night and the efficiency of the device itself. For therapy to be considered effective, the number of apneas and hypopneas must be less than 5 per hour of sleep.

Also known as: CPAP
Patients with obstructive sleep apnea

Eligibility Criteria

Age25 Years - 79 Years
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Patients with OSAS who have been previously examined by a neurologist for sleep disorders, have undergone polysomnography, and have been diagnosed with moderate or severe obstructive sleep apnea according to the AHI index
  • Healthy individuals for control group that will consist of subjects in whom specific questionnaires excluded the existence of obstructive sleep apnea.

You may not qualify if:

  • age less than 18 years,
  • persons with previous neurootological diseases that required surgical treatment
  • persons who deviate from the research protocol.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Department of Otorhinolaryngology and Head and Neck Surgery, University Hospital Center Osijek

Osijek, Croatia

RECRUITING

MeSH Terms

Conditions

Sleep Apnea, ObstructiveHypoxia

Condition Hierarchy (Ancestors)

Sleep Apnea SyndromesApneaRespiration DisordersRespiratory Tract DiseasesSleep Disorders, IntrinsicDyssomniasSleep Wake DisordersNervous System DiseasesSigns and Symptoms, RespiratorySigns and SymptomsPathological Conditions, Signs and Symptoms

Study Officials

  • Darija Birtic

    Department of Otorhinolaryngology and Head and Neck Surgery Osijek

    STUDY CHAIR

Central Study Contacts

Mirjana Grebenar Čerkez

CONTACT

Study Design

Study Type
interventional
Phase
not applicable
Allocation
NON RANDOMIZED
Masking
NONE
Purpose
SCREENING
Intervention Model
SINGLE GROUP
Sponsor Type
OTHER
Responsible Party
SPONSOR INVESTIGATOR
PI Title
Mirjana Grebenar Cerkez, M.D. ENT specialist, audiologist

Study Record Dates

First Submitted

April 27, 2022

First Posted

May 5, 2022

Study Start

May 2, 2022

Primary Completion

April 1, 2024

Study Completion

November 1, 2024

Last Updated

January 24, 2024

Record last verified: 2023-10

Data Sharing

IPD Sharing
Will share

Plan is to share the results of pure tone audiometry and results of otoacoustic emission for each individuals in the study

Shared Documents
STUDY PROTOCOL, ICF, CSR
Time Frame
The data will be available upon completion of research for 12 months long
Access Criteria
The information will be shared with other potential researchers for further analyses

Locations