Occupational hearing loss and prevention
Hearing loss can be caused by occupational noise exposure in various industries such as construction, manufacturing, and military. Noise from sources like power tools, machinery, and weapons can damage hearing over time. Musicians are also at risk from loud music. Prevention methods include monitoring noise levels, conducting audiometric testing, raising awareness of noise hazards, and using hearing protection like earplugs and earmuffs. Hearing loss is cumulative and permanent damage can occur even from moderate noise levels with regular exposure over years. Employers should implement noise control measures and hearing conservation programs.
NIHL is defined by National Code of Practice (2004) as hearing impairment arising from exposure to excessive noise at work, and is also commonly known as industrial deafness.
NIHL is entirely preventable but once acquired it is irreversible
NOISE INDUCED HEARING LOSS !
~ Shri.Dr.Ch.Ramanachary Ji, MS ENT,
Professor and HOD Prathima Institute of Medical Sciences,
Karimnagar, Telangana State, India
Occupational noise-induced hearing loss (NIHL) is a major compensable industrial disease in Australia, which has severe impact – sufferers have trouble communicating, can become socially isolated and experience a substantial reduction in their quality of life. As well as the negative affects directly associated with the individual affected, NIHL also has substantial economic costs. Exposure to excessive noise causes increased employee turnover and absenteeism as well as lowered performance.
Although NIHL is irreversible, it can prevented. In this slide deck, Kerri-Ann Jessep, Client Support Consultant and Occupational Hygienist at Medgate, teaches you how you can better protect your employees from noise induced hearing loss.
NIHL is defined by National Code of Practice (2004) as hearing impairment arising from exposure to excessive noise at work, and is also commonly known as industrial deafness.
NIHL is entirely preventable but once acquired it is irreversible
NOISE INDUCED HEARING LOSS !
~ Shri.Dr.Ch.Ramanachary Ji, MS ENT,
Professor and HOD Prathima Institute of Medical Sciences,
Karimnagar, Telangana State, India
Occupational noise-induced hearing loss (NIHL) is a major compensable industrial disease in Australia, which has severe impact – sufferers have trouble communicating, can become socially isolated and experience a substantial reduction in their quality of life. As well as the negative affects directly associated with the individual affected, NIHL also has substantial economic costs. Exposure to excessive noise causes increased employee turnover and absenteeism as well as lowered performance.
Although NIHL is irreversible, it can prevented. In this slide deck, Kerri-Ann Jessep, Client Support Consultant and Occupational Hygienist at Medgate, teaches you how you can better protect your employees from noise induced hearing loss.
Audiometry for Undergraduate and postgraduate ENT students Dr Krishna Koirala
Audiometry is one of the essential topic in MBBS.
This presentation helps students to learn about basic audiometry for MBBS level and shall equally be useful for postgraduate ENT students, too.
Protecting workers from Noise Induced Hearing Loss - webinar Jan 28, 2015Medgate Inc.
Of all of the occupational health issues facing organizations today, noise induced hearing loss (NIHL) is the most common.In the United States alone, over 30 million people are exposed to noise every year, and nearly one in four cases of hearing loss among workers is caused by exposures on the job. Frighteningly, the number of employees affected by noise is steadily increasing each year, despite the fact that NIHL is completely preventable. It is clear that action must be taken to arrest this trend.
The most effective way to combat this threat is through education of both the workforce who are exposed to noise and the staff who look to protect them.
This webinar will:
provide a definition of noise.
discuss the importance of noise induced hearing loss as an occupational disease.
describe the different physical impacts of noise.
outline best practices for implementing and improving a hearing conservation program.
Audiometry for Undergraduate and postgraduate ENT students Dr Krishna Koirala
Audiometry is one of the essential topic in MBBS.
This presentation helps students to learn about basic audiometry for MBBS level and shall equally be useful for postgraduate ENT students, too.
Protecting workers from Noise Induced Hearing Loss - webinar Jan 28, 2015Medgate Inc.
Of all of the occupational health issues facing organizations today, noise induced hearing loss (NIHL) is the most common.In the United States alone, over 30 million people are exposed to noise every year, and nearly one in four cases of hearing loss among workers is caused by exposures on the job. Frighteningly, the number of employees affected by noise is steadily increasing each year, despite the fact that NIHL is completely preventable. It is clear that action must be taken to arrest this trend.
The most effective way to combat this threat is through education of both the workforce who are exposed to noise and the staff who look to protect them.
This webinar will:
provide a definition of noise.
discuss the importance of noise induced hearing loss as an occupational disease.
describe the different physical impacts of noise.
outline best practices for implementing and improving a hearing conservation program.
As these few slides show. Without fit checking EVERY employee, EVERY day, you can\'t be sure what sort of noise reduction their disposable ear plugs are giving them.
As veterans get older, they may exhibit military-related primary and mental health issues in concert with typical age-related stressors such as retirement, bereavement, and physical decline. Research shows older veterans are pre-disposed and have early onset for a variety of health issues impacted by their military service-related injuries. While Vietnam veterans age, we must prepare to treat a host of issues associated with the neglect and lack of services they've received.
Our first presenter, Amy Fairweather, Director of the Institute for Veteran Policy at Swords to Plowshares will cover the demographics of aging veterans and health outcomes related to military service. Michael Blecker, Executive Director at Swords to Plowshares will cover the Vietnam Generation and the legacy of neglect. Finally, Janice Yee, Geriatrics Specialist at Swords will cover housing and clinical outcomes of aging veterans from a community perspective.
Presenters: Amy Fairweather, Director of the Institute of Veteran Policy
Michael Blecker, Executive Director of Swords to Plowshares
Janice Yee, Geriatric Specialist at Swords to Plowshares
Velké změny začínají od nejmenších. Aneb jak si vedlo Sdružení TEREZA v roce ...pbartonkova
2 základní TEREZÍ hodnoty jsou životní prostředí a vzdělání. Tyto hodnoty rozvíjíme v našich dlouhodobých programech Ekoškola, Globe, Les ve škole, pomocí kterých se snažíme o to, aby děti měly přírodu rády.
Working with veterans suffering from mental health problemsWellcome Collection
Veterans with chronic mental health problems commonly isolate themselves from mainstream society, have poor relationships with others and suffer marital, family and economic difficulties. While the true scale of the mental health problem is unknown in Britain, as veteran population studies have not been performed, Combat Stress – the national charity that looks after veterans with mental health problems – has had increasing demands for help over the past few years. This session discussed rehabilitation strategies for veterans with mental health problems and highlighted the work of Combat Stress.
From the Remembering War Symposium at Wellcome Collection www.wellcomecollection.org
About 30 million workers are exposed to hazardous noise on the job. One in 4 of these workers (or 7.5 million Americans) will develop permanent hearing loss.Noise-induced hearing loss is the most common occupational hazard for American workers.Hearing loss from noise is slow and painless; you can have a disability before you notice it.If you must raise your voice to speak with someone only 3 feet away, you are in high (hazardous) noise. It is 100% preventable
The OSHA standard for noise requires at-workers to receive training on how noise affects them along with the controls to protect them from exposure and monitor their hearing. If this the type of training that you require to meet your regulatory obligations, contact us at The Windsor Consulting Group, Inc. We have over 60 occupational health and safety course offering to help your workforce, public, and the environment
Physical hazards consists of occupational noise, vibration, inappropriate illumination, ventilation, ionizing and non ionizing radiation etc. Our hearing sensory will cause serious defects by noise and vibration
Solutions and Remedies for Noise Pollution
Planting bushes and trees in and around sound generating sources is an effective solution for noise pollution.
Urban Planning, Public Education and Awareness
Regular servicing and tuning of automobiles/ machinery can effectively reduce the noise pollution.
Alteration of roadway surface texture.
Buildings can be designed with suitable noise absorbing material for the walls, windows, and ceilings.
Soundproof doors and windows can be installed to block unwanted noise from outside.
Factories and industries should be located far from the residential areas.
Workers should be provided with equipment such as ear plugs and earmuffs for hearing protection.
Control in the Transmission Path, Control at Source, Control over Vibrations
Exposure Reduction
Enclosure of machines can reduce noise levels at its source very effectively.
Leakage where pipes pass through walls as well as acoustic leaks between walls, screens or enclosures, can produce large variations in the attenuation achieved. It is therefore important to seal air gaps carefully
Putting major noise sources at one place & separating it from quieter area.
Using acoustic barriers, sound absorbing linings & sound insulating partitions.
Complete or partial enclosure of noisy equipment.
Providing silencers on the intake as well as exhaust side of flow machines, like blowers, fans etc.
Insertion of damping material between machine bases and foundations and use of anti vibration mountings.
Regulations should be imposed to restrict the usage of play loudspeakers in crowded areas and public places.
International Co-operation
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Pulmonary Thromboembolism - etilogy, types, medical- Surgical and nursing man...VarunMahajani
Disruption of blood supply to lung alveoli due to blockage of one or more pulmonary blood vessels is called as Pulmonary thromboembolism. In this presentation we will discuss its causes, types and its management in depth.
- Video recording of this lecture in English language: https://youtu.be/lK81BzxMqdo
- Video recording of this lecture in Arabic language: https://youtu.be/Ve4P0COk9OI
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Flu Vaccine Alert in Bangalore Karnatakaaddon Scans
As flu season approaches, health officials in Bangalore, Karnataka, are urging residents to get their flu vaccinations. The seasonal flu, while common, can lead to severe health complications, particularly for vulnerable populations such as young children, the elderly, and those with underlying health conditions.
Dr. Vidisha Kumari, a leading epidemiologist in Bangalore, emphasizes the importance of getting vaccinated. "The flu vaccine is our best defense against the influenza virus. It not only protects individuals but also helps prevent the spread of the virus in our communities," he says.
This year, the flu season is expected to coincide with a potential increase in other respiratory illnesses. The Karnataka Health Department has launched an awareness campaign highlighting the significance of flu vaccinations. They have set up multiple vaccination centers across Bangalore, making it convenient for residents to receive their shots.
To encourage widespread vaccination, the government is also collaborating with local schools, workplaces, and community centers to facilitate vaccination drives. Special attention is being given to ensuring that the vaccine is accessible to all, including marginalized communities who may have limited access to healthcare.
Residents are reminded that the flu vaccine is safe and effective. Common side effects are mild and may include soreness at the injection site, mild fever, or muscle aches. These side effects are generally short-lived and far less severe than the flu itself.
Healthcare providers are also stressing the importance of continuing COVID-19 precautions. Wearing masks, practicing good hand hygiene, and maintaining social distancing are still crucial, especially in crowded places.
Protect yourself and your loved ones by getting vaccinated. Together, we can help keep Bangalore healthy and safe this flu season. For more information on vaccination centers and schedules, residents can visit the Karnataka Health Department’s official website or follow their social media pages.
Stay informed, stay safe, and get your flu shot today!
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The prostate is an exocrine gland of the male mammalian reproductive system
It is a walnut-sized gland that forms part of the male reproductive system and is located in front of the rectum and just below the urinary bladder
Function is to store and secrete a clear, slightly alkaline fluid that constitutes 10-30% of the volume of the seminal fluid that along with the spermatozoa, constitutes semen
A healthy human prostate measures (4cm-vertical, by 3cm-horizontal, 2cm ant-post ).
It surrounds the urethra just below the urinary bladder. It has anterior, median, posterior and two lateral lobes
It’s work is regulated by androgens which are responsible for male sex characteristics
Generalised disease of the prostate due to hormonal derangement which leads to non malignant enlargement of the gland (increase in the number of epithelial cells and stromal tissue)to cause compression of the urethra leading to symptoms (LUTS
Couples presenting to the infertility clinic- Do they really have infertility...Sujoy Dasgupta
Dr Sujoy Dasgupta presented the study on "Couples presenting to the infertility clinic- Do they really have infertility? – The unexplored stories of non-consummation" in the 13th Congress of the Asia Pacific Initiative on Reproduction (ASPIRE 2024) at Manila on 24 May, 2024.
micro teaching on communication m.sc nursing.pdfAnurag Sharma
Microteaching is a unique model of practice teaching. It is a viable instrument for the. desired change in the teaching behavior or the behavior potential which, in specified types of real. classroom situations, tends to facilitate the achievement of specified types of objectives.
Title: Sense of Smell
Presenter: Dr. Faiza, Assistant Professor of Physiology
Qualifications:
MBBS (Best Graduate, AIMC Lahore)
FCPS Physiology
ICMT, CHPE, DHPE (STMU)
MPH (GC University, Faisalabad)
MBA (Virtual University of Pakistan)
Learning Objectives:
Describe the primary categories of smells and the concept of odor blindness.
Explain the structure and location of the olfactory membrane and mucosa, including the types and roles of cells involved in olfaction.
Describe the pathway and mechanisms of olfactory signal transmission from the olfactory receptors to the brain.
Illustrate the biochemical cascade triggered by odorant binding to olfactory receptors, including the role of G-proteins and second messengers in generating an action potential.
Identify different types of olfactory disorders such as anosmia, hyposmia, hyperosmia, and dysosmia, including their potential causes.
Key Topics:
Olfactory Genes:
3% of the human genome accounts for olfactory genes.
400 genes for odorant receptors.
Olfactory Membrane:
Located in the superior part of the nasal cavity.
Medially: Folds downward along the superior septum.
Laterally: Folds over the superior turbinate and upper surface of the middle turbinate.
Total surface area: 5-10 square centimeters.
Olfactory Mucosa:
Olfactory Cells: Bipolar nerve cells derived from the CNS (100 million), with 4-25 olfactory cilia per cell.
Sustentacular Cells: Produce mucus and maintain ionic and molecular environment.
Basal Cells: Replace worn-out olfactory cells with an average lifespan of 1-2 months.
Bowman’s Gland: Secretes mucus.
Stimulation of Olfactory Cells:
Odorant dissolves in mucus and attaches to receptors on olfactory cilia.
Involves a cascade effect through G-proteins and second messengers, leading to depolarization and action potential generation in the olfactory nerve.
Quality of a Good Odorant:
Small (3-20 Carbon atoms), volatile, water-soluble, and lipid-soluble.
Facilitated by odorant-binding proteins in mucus.
Membrane Potential and Action Potential:
Resting membrane potential: -55mV.
Action potential frequency in the olfactory nerve increases with odorant strength.
Adaptation Towards the Sense of Smell:
Rapid adaptation within the first second, with further slow adaptation.
Psychological adaptation greater than receptor adaptation, involving feedback inhibition from the central nervous system.
Primary Sensations of Smell:
Camphoraceous, Musky, Floral, Pepperminty, Ethereal, Pungent, Putrid.
Odor Detection Threshold:
Examples: Hydrogen sulfide (0.0005 ppm), Methyl-mercaptan (0.002 ppm).
Some toxic substances are odorless at lethal concentrations.
Characteristics of Smell:
Odor blindness for single substances due to lack of appropriate receptor protein.
Behavioral and emotional influences of smell.
Transmission of Olfactory Signals:
From olfactory cells to glomeruli in the olfactory bulb, involving lateral inhibition.
Primitive, less old, and new olfactory systems with different path
2. Boiler makers and gunners were the predecessors
1510-1590
873
self inflicted hearing loss
Rock Musician Pete Townshead--- prompted by his
partial deafness and Tinnitus –formation ---H E A R
(Hearing Education and Awareness for Rockers in
1980’s)
3. High Risk of Noise Induced Hearing
Loss
• Industrial/Workplace
• Military
• Recreational Noise Exposure
• Musicians
4. Common Noise
Sources
Waste extraction Fan
Electric motor
Air Compressor
Assembly
machine
Ultrasonic
welder
5. Music Induced Hearing Loss
• Hearing loss due to excessive,
unprotected exposures to loud
music
Listening to an MP3 player at full
volume for one hour a day is enough to
seriously damage people's hearing
Attending a rock concert
6. Florence Nightingale wasn’t exaggerating when she referred to
hospital noise as “abuse.”
Florence Nightingale wrote in
her 1859 book, Notes on
Nursing
she wrote, “Unnecessary noise is the most cruel abuse of
care which can be inflicted on either the sick or the well.”
7. World Health Organization’s recommendation of
35 decibels as a top measure of sound levels in
patient rooms.
medical and communications technologies -
major culprits behind increasing noise levels.
Communications devices like overhead pagers
and cell phones - monitoring and life-
sustaining equipment continually beeps and
whooshes around patients’ beds, occasionally
erupting into alarming warning signals
9. Cardiovascular problems
Endocrine problems
Exposure to sudden, unexpected
noise raises patient heart rates
and has been proven to have a
negative influence on patient
recovery times. Chronically high
levels of sound -tend to increase
blood pressure levels
Disrupt sleeping pattern
of the neonates
11. NOISE INDUCED HEARING LOSS
Acoustic trauma- Sudden impulsive sound for
shorter duration-explossive blast injury
12. Progressive
Can be temporary or permanent
– Temporary Loss: Change in hearing after noise exposure but returns in time
– a temporary loss of hearing after exposure to sound---results in a temporary
shift of the auditory threshold known as a temporary threshold shift (TTS).
– Permanent Loss: Change in hearing after noise exposure but will NOT return
– The damage can become permanent (permanent threshold shift, PTS) if
sufficient recovery time is not allowed for before continued sound exposure
13. Hallowell Davis’ classic experiments in
the 1940s further linked the hair cell
damage to hearing loss and he also
reported cochlear neuron degeneration
and capillary vasoconstriction as a
consequence of hazardous noise
exposure.
14. minor bending of the stereocilia (inner ear) is
associated with temporary hearing loss and is
involved in auditory fatigue. Complete loss of
the stereocilia causes permanent hearing
damage
15. NIHL-Dependent on intensity ,duration
and type of noise expossure
The greater the intensity of the noise ,
the less expossure time required for
damaging effects
Impulsive noise ----physically break
hair cells with the potential for little or
no recovery
Steady state noise (factory noise)—
may temporarily stress the hair cells,
which then recover after a period of
rest
21. Sound Level Meter and Noise Dosimeter
Noise monitoring
• noise dosimeters - document
the average noise exposure over
your working day
A personal noise indicator is a
warning device.It indicates if
your immediate exposure is
less than or greater than 85
dBA. It flashes green if the
sound level is under 85 dBA
and red when above 85 dBA.
23. Ear Muffs
Advantages
• More protection at higher
frequencies than earplugs
• Various NRRs available
• Durable, long lasting
• Can be fitted on hard hat
• Reusable
Some high-tech muffs can filter out certain
frequencies or have radios inside for
communication in high noise areas
24. Custom earplugs
– Common option for musicians
– More expensive but are custom
– Earmold Impressions
– Typically are more comfortable and can provide a
better seal
• Most companies have a choice of either 9, 15, or 25 dB filters on
earplugs
25. Foam Insert Earplugs
Advantages
• Inexpensive; disposable
• Can be custom molded for
individual worker
• Reusable plugs are available
26. Semi-aural Caps
Ear caps are like earplugs, except they do not
go into the ear canal, they only block it.
They are good for occasional use or for people
who find earplugs uncomfortable.
They are not as protective as earplugs or
muffs.
• Ideal for people going in and out of noisy areas
27. Buildings can be designed with suitable
noise absorbing material for the walls,
windows, and ceilings. Noise Barriers
pre-fabricated noise barriers-Block the noise
by building temporary barriers of plywood or
other on-site materials to keep the noise from
reaching
28. Soundproof doors and windows can be
installed to block unwanted noise from
outside.
Regulations should be imposed to restrict the
usage of play loudspeakers
acoustical insulation-Place wooden box
over the generator. Add fire-resistant
acoustical absorbing material (foam) inside
the box. If the generator sits on soil or
sand,that will help absorb some of the
noise.
29. Similar to automobiles, lubrication of the machinery
and servicing should be done to minimize noise
generation.
30. • It is cumulative like tobacco.
• One cigarette will not kill you and one day at work will not
make you deaf.
• Neither will two or three – but where is the line? It is easy
to say “one more exposure is not going to make any
difference.”
