Ignite Creation Date:
2024-05-06 @ 2:00 PM
Last Modification Date:
2024-10-26 @ 1:23 PM
Study NCT ID:
NCT04183361
Status:
UNKNOWN
Last Update Posted:
2019-12-05
First Post:
2019-11-27
Brief Title:
ABR Characteristics and Salivary Cortisone Concentration in Noise-exposed Workers
Sponsor:
University Hospital Sestre Milosrdnice
Organization:
University Hospital Sestre Milosrdnice
Study Overview
Official Title:
Correlation of Auditory Evoked Brainstem Response Characteristics and Salivary Cortisone Concentration in Noise-exposed Workers
Status:
UNKNOWN
Status Verified Date:
2019-12
Last Known Status:
ENROLLING_BY_INVITATION
Delayed Posting:
No
If Stopped, Why?:
Not Stopped
Has Expanded Access:
False
If Expanded Access, NCT#:
N/A
Has Expanded Access, NCT# Status:
N/A
Acronym:
None
Brief Summary:
The aim of the research
Investigate the association of auditory evoked brainstem response characteristics with salivary cortisone concentrations in noise-exposed workers
Purpose of the research
1 Investigate the magnitude of the amplitudes and latencies of auditory brainstem responses
2 Investigate the concentration of cortisone in saliva
3 To investigate the correlation of the characteristics of auditory evoked brainstem potentials with the age of the subjects or the length of work in noise
4 Investigate the association of salivary cortisone concentration with subjects age or length of work in noise
5 Investigate the prevalence of mild moderate and severe hearing impairment in the 19-35 age group
6 Investigate the relationship of hearing threshold shift with the age of the subjects or the length of work in noise
7 To investigate the difference in the characteristics of auditory evoked brainstem potentials and the difference in salivary cortisone concentration between subjects with a bilaterally normal hearing threshold 25 dB at high frequencies and subjects with unilaterally or bilaterally increased hearing threshold 25 dB at high frequencies
8 Investigate the perceived stress and psychosocial risk factors in the workplace and their relationship to salivary cortisone concentrations
Research Hypothesis
There is an association between the characteristics of auditory evoked brainstem response and salivary cortisone concentrations in noise-exposed workers
Research participants
Inclusion criteria
1 male and female
2 ages 19-35
3 exposure to noise level 85 dB A per week at the workplace
4 work in noise from 1 to 16 years
5 workplace not involving exposure to carbon disulfide or a mixture of organic solvents that have toxic effects on the ear toluene xylene and styrene
6 unilaterally or bilaterally normal otoscopic findings
7 unilaterally or bilaterally tympanogram peak pressure value 50 daPa at 226 Hz with eardrum mobility of 03 to 13 mL
Exclusion criteria
1 information about an earlier sudden hearing loss
2 information on chronic middle ear inflammation
3 information on ear surgery except placement of ventilation tubes in the eardrum
4 information on dizziness associated with hearing loss and noise
5 information on insomnia
6 current use of oral corticosteroids
7 bilaterally found air-bone gap greater than 15 dB
Investigate the association of auditory evoked brainstem response characteristics with salivary cortisone concentrations in noise-exposed workers
Purpose of the research
1 Investigate the magnitude of the amplitudes and latencies of auditory brainstem responses
2 Investigate the concentration of cortisone in saliva
3 To investigate the correlation of the characteristics of auditory evoked brainstem potentials with the age of the subjects or the length of work in noise
4 Investigate the association of salivary cortisone concentration with subjects age or length of work in noise
5 Investigate the prevalence of mild moderate and severe hearing impairment in the 19-35 age group
6 Investigate the relationship of hearing threshold shift with the age of the subjects or the length of work in noise
7 To investigate the difference in the characteristics of auditory evoked brainstem potentials and the difference in salivary cortisone concentration between subjects with a bilaterally normal hearing threshold 25 dB at high frequencies and subjects with unilaterally or bilaterally increased hearing threshold 25 dB at high frequencies
8 Investigate the perceived stress and psychosocial risk factors in the workplace and their relationship to salivary cortisone concentrations
Research Hypothesis
There is an association between the characteristics of auditory evoked brainstem response and salivary cortisone concentrations in noise-exposed workers
Research participants
Inclusion criteria
1 male and female
2 ages 19-35
3 exposure to noise level 85 dB A per week at the workplace
4 work in noise from 1 to 16 years
5 workplace not involving exposure to carbon disulfide or a mixture of organic solvents that have toxic effects on the ear toluene xylene and styrene
6 unilaterally or bilaterally normal otoscopic findings
7 unilaterally or bilaterally tympanogram peak pressure value 50 daPa at 226 Hz with eardrum mobility of 03 to 13 mL
Exclusion criteria
1 information about an earlier sudden hearing loss
2 information on chronic middle ear inflammation
3 information on ear surgery except placement of ventilation tubes in the eardrum
4 information on dizziness associated with hearing loss and noise
5 information on insomnia
6 current use of oral corticosteroids
7 bilaterally found air-bone gap greater than 15 dB
Detailed Description:
The research is cross-sectional The expected duration of the survey is at least 18 months Assuming that the characteristics of the auditory evoked brainstem potentials are correlated with salivary cortisone concentration with a correlation coefficient of 04 a test power of 80 and a significance level of α 005 at least 46 subjects should be included in the study Test power analysis was performed using MedCalc Statistical Software version 191 MedCalc Software bv Ostend Belgium httpswwwmedcalcorg 2019 According to the data distribution Kolmogorov-Smirnov test appropriate parametric and or non-parametric statistical tests will be applied in accordance with the obtained results The data will be presented in tables and graphs Numerical variables will be represented using the range arithmetic mean and standard deviation respectively the median and the interquartile range in cases of distribution that does not follow the normal distribution The categorical variables will be presented using absolute frequencies and their respective proportions Differences in the values of the numerical variables between the test groups with a defined hearing threshold will be analyzed by parametric Students t-test for independent samples and non-parametric Mann-Whitney U test for independent samples Differences in categorical variables between the examined groups will be analyzed by chi-square test or Fishers exact test in cases where the number of subjects in each group is less than 5 The corresponding correlation coefficients Pearsons or Spearmans between individual clinical variables will be calculated An appropriate regression model for the prediction of belonging to a group with a defined hearing threshold shift will be made which will include those that have a significance level of P020 in the previous statistical analyzes In the above tests significant P values will be considered to be less than 005 The statistical analysis of data will use IBM SPSS Statistics licensed software version 250
Material
1 Audiometer Audiometer AC40
2 DD45 audiometric headphones
3 Interacoustics AZ26 tympanometer
4 Equipment for testing auditory evoked brainstem potentials ABR Interacoustics Eclipse EPA Preamplifier 3M E-A-RTONE Insert Earphone ABR
5 Cortisol-Salivette Cotton Salad Carrier
6 High Performance Liquid Chromatography HPLC
7 validated questionnaire in the Croatian language - assessment of psychosocial risk factors in the HSE workplace 8th validated questionnaire in Croatian - The scale of stress experienced
Research plan
An employer finds workers who meet points 1-5 of study inclusion criteria A head of the research checks their medical history and includes them in the study if they do not meet any of first six exclusion criteria A head of the research orally informs these workers at the meeting and helps them to understand and sign a written informed consent for participation in the research Each of them receive an information about the date of arrival at the place of research and also a unique password that encodes saliva samples completed questionnaires and electronic and printed findings derived from the assessment of hearing health The research leader research mentors and occupational safety manager who is responsible for supervising the sampling and storage of saliva samples in the refrigerator at 4 in the workplace know the password and associated name
A participant is expected to
1 Give three saliva samples at the workplace immediately after the morning shift The first saliva sample was given 3 days Tuesday before arrival at the research place the second sample 2 days Wednesday before arrival and the third sample 1 day Thursday before arrival at the research site One hour before saliva sampling a respondent should not brush hisher teeth nor eat nor drink Fifteen minutes prior to sample administration the subject should rinse hisher mouth with a cold water Then head of the research analyses coded saliva samples in laboratory by using High Performance Liquid Chromatography HPLC at the Translational Medicine Division of the Srebrnjak Childrens Hospital After processing and preparing each of the saliva samples for HPLC the native sample no longer exists After the analytes will be detected in the isolate all the material will be completely eliminated as infectious waste
2 Collaboration in the process of assessing hearing health at the research place The assessment includes otoscopy tympanometry and audiometry Subjects who do not meet point 6 and 7 of the inclusion criteria or who meet point 7 of the exclusion criteria will not be tested for auditory evoked brainstem response Other subjects will be tested for auditory evoked brainstem response in only one ear with a more regular hearing threshold
3 Self-assessment of perceived stress and psychosocial risk factors in the workplace by completing a questionnaire at the research site
A researcher conducting this research and the research participants will not receive a financial fee for their participation
Expected scientific contribution of the research
Quantification of the association of auditory evoked brainstem response characteristics with salivary cortisone concentrations among workers exposed to noise
Possible risks of participating in the research
This research involves no risk other than the usual daily risk
Material
1 Audiometer Audiometer AC40
2 DD45 audiometric headphones
3 Interacoustics AZ26 tympanometer
4 Equipment for testing auditory evoked brainstem potentials ABR Interacoustics Eclipse EPA Preamplifier 3M E-A-RTONE Insert Earphone ABR
5 Cortisol-Salivette Cotton Salad Carrier
6 High Performance Liquid Chromatography HPLC
7 validated questionnaire in the Croatian language - assessment of psychosocial risk factors in the HSE workplace 8th validated questionnaire in Croatian - The scale of stress experienced
Research plan
An employer finds workers who meet points 1-5 of study inclusion criteria A head of the research checks their medical history and includes them in the study if they do not meet any of first six exclusion criteria A head of the research orally informs these workers at the meeting and helps them to understand and sign a written informed consent for participation in the research Each of them receive an information about the date of arrival at the place of research and also a unique password that encodes saliva samples completed questionnaires and electronic and printed findings derived from the assessment of hearing health The research leader research mentors and occupational safety manager who is responsible for supervising the sampling and storage of saliva samples in the refrigerator at 4 in the workplace know the password and associated name
A participant is expected to
1 Give three saliva samples at the workplace immediately after the morning shift The first saliva sample was given 3 days Tuesday before arrival at the research place the second sample 2 days Wednesday before arrival and the third sample 1 day Thursday before arrival at the research site One hour before saliva sampling a respondent should not brush hisher teeth nor eat nor drink Fifteen minutes prior to sample administration the subject should rinse hisher mouth with a cold water Then head of the research analyses coded saliva samples in laboratory by using High Performance Liquid Chromatography HPLC at the Translational Medicine Division of the Srebrnjak Childrens Hospital After processing and preparing each of the saliva samples for HPLC the native sample no longer exists After the analytes will be detected in the isolate all the material will be completely eliminated as infectious waste
2 Collaboration in the process of assessing hearing health at the research place The assessment includes otoscopy tympanometry and audiometry Subjects who do not meet point 6 and 7 of the inclusion criteria or who meet point 7 of the exclusion criteria will not be tested for auditory evoked brainstem response Other subjects will be tested for auditory evoked brainstem response in only one ear with a more regular hearing threshold
3 Self-assessment of perceived stress and psychosocial risk factors in the workplace by completing a questionnaire at the research site
A researcher conducting this research and the research participants will not receive a financial fee for their participation
Expected scientific contribution of the research
Quantification of the association of auditory evoked brainstem response characteristics with salivary cortisone concentrations among workers exposed to noise
Possible risks of participating in the research
This research involves no risk other than the usual daily risk
Study Oversight
Has Oversight DMC:
None
Is a FDA Regulated Drug?:
False
Is a FDA Regulated Device?:
False
Is an Unapproved Device?:
None
Is a PPSD?:
None
Is a US Export?:
None
Is an FDA AA801 Violation?:
None