Linear hearing instrument fitting methodsLynn Royer
The document discusses the history of linear hearing instrument fitting methods from the 1930s to present. Initial attempts to create fitting formulae involved "mirroring" the audiogram by providing 1 dB of gain for every 1 dB of measured hearing loss. However, it became clear this did not account for the reduced dynamic range and loudness tolerance of sensorineural hearing loss. Half-gain and other prescriptive fitting formulae based on hearing threshold measurements were developed instead. Finding the optimal gain remains challenging due to variability in input signals, loudness perception, and individual communication needs.
This document discusses the electroacoustic characteristics and clinical fitting techniques of hearing aids. It describes key parameters used to measure hearing aid performance such as gain, output sound pressure level (OSPL90), and frequency response. These measurements are standardized by ANSI and involve presenting specific input signals to measure the hearing aid's output. The document also discusses techniques for selecting appropriate hearing aids based on a patient's hearing loss, physical conditions, and preferences. Selection involves considering factors like circuitry, style, controls, and using trials to determine the best fitting device.
The document describes the design and construction of a digital hearing aid with recording capabilities. It aims to minimize background noise and allow playback of conversations. Key features include:
- A directional microphone and telecoil input to the amplifier circuit.
- An audio recording system using an IC memory to store up to 60 seconds of playback.
- A testing process that showed improved hearing for users with disabilities, except those who are completely deaf.
The hearing aid was designed and constructed to address issues like noise filtering, sound localization, and social stigma. Test results demonstrated benefits for various levels of impaired hearing. Recommendations include reducing size, improving noise cancellation and feedback management, and increasing storage capacity.
Venting in earmolds serves several purposes: 1) To allow low-frequency signals to escape or enter the ear canal, 2) To decrease occlusion effects and pressure buildup, and 3) To allow for ear canal aeration. The size and shape of the vent impacts its acoustic properties - smaller vents have greater venting effects while larger vents decrease venting. Proper vent selection is important for hearing aid function and feedback as venting interacts with features like gain, noise reduction, and microphone directivity. Parallel vents are preferred over diagonal vents which can increase feedback.
This document discusses hearing aid basics and advanced hearing aid technology. It explains that hearing aids have microphones, amplifiers and speakers to pick up and amplify sounds. Modern hearing aids use non-linear processing like compression and expansion to fit sounds within patients' dynamic ranges and mimic the cochlea's non-linearity. Frequency transposition moves inaudible high frequencies down an octave. Hearing aids may affect the natural resonance of the ear canal. Conductive hearing losses are easier to treat with hearing aids than sensorineural losses.
A review for Hearing loss causes and Hearing aids
ototoxicity has been left out other then a mention as it is separate topic. PPt prepared for in ward discussion with colleagues.
The document discusses a study that evaluated the effectiveness of bilateral versus monaural bone-anchored hearing aid (BAHA) fittings. 25 patients with symmetrical hearing loss were tested on directional hearing and speech recognition in quiet and noise. The results showed improved sound localization and speech understanding in noise with bilateral BAHA fittings compared to monaural fittings.
Linear hearing instrument fitting methodsLynn Royer
The document discusses the history of linear hearing instrument fitting methods from the 1930s to present. Initial attempts to create fitting formulae involved "mirroring" the audiogram by providing 1 dB of gain for every 1 dB of measured hearing loss. However, it became clear this did not account for the reduced dynamic range and loudness tolerance of sensorineural hearing loss. Half-gain and other prescriptive fitting formulae based on hearing threshold measurements were developed instead. Finding the optimal gain remains challenging due to variability in input signals, loudness perception, and individual communication needs.
This document discusses the electroacoustic characteristics and clinical fitting techniques of hearing aids. It describes key parameters used to measure hearing aid performance such as gain, output sound pressure level (OSPL90), and frequency response. These measurements are standardized by ANSI and involve presenting specific input signals to measure the hearing aid's output. The document also discusses techniques for selecting appropriate hearing aids based on a patient's hearing loss, physical conditions, and preferences. Selection involves considering factors like circuitry, style, controls, and using trials to determine the best fitting device.
The document describes the design and construction of a digital hearing aid with recording capabilities. It aims to minimize background noise and allow playback of conversations. Key features include:
- A directional microphone and telecoil input to the amplifier circuit.
- An audio recording system using an IC memory to store up to 60 seconds of playback.
- A testing process that showed improved hearing for users with disabilities, except those who are completely deaf.
The hearing aid was designed and constructed to address issues like noise filtering, sound localization, and social stigma. Test results demonstrated benefits for various levels of impaired hearing. Recommendations include reducing size, improving noise cancellation and feedback management, and increasing storage capacity.
Venting in earmolds serves several purposes: 1) To allow low-frequency signals to escape or enter the ear canal, 2) To decrease occlusion effects and pressure buildup, and 3) To allow for ear canal aeration. The size and shape of the vent impacts its acoustic properties - smaller vents have greater venting effects while larger vents decrease venting. Proper vent selection is important for hearing aid function and feedback as venting interacts with features like gain, noise reduction, and microphone directivity. Parallel vents are preferred over diagonal vents which can increase feedback.
This document discusses hearing aid basics and advanced hearing aid technology. It explains that hearing aids have microphones, amplifiers and speakers to pick up and amplify sounds. Modern hearing aids use non-linear processing like compression and expansion to fit sounds within patients' dynamic ranges and mimic the cochlea's non-linearity. Frequency transposition moves inaudible high frequencies down an octave. Hearing aids may affect the natural resonance of the ear canal. Conductive hearing losses are easier to treat with hearing aids than sensorineural losses.
A review for Hearing loss causes and Hearing aids
ototoxicity has been left out other then a mention as it is separate topic. PPt prepared for in ward discussion with colleagues.
The document discusses a study that evaluated the effectiveness of bilateral versus monaural bone-anchored hearing aid (BAHA) fittings. 25 patients with symmetrical hearing loss were tested on directional hearing and speech recognition in quiet and noise. The results showed improved sound localization and speech understanding in noise with bilateral BAHA fittings compared to monaural fittings.
hearing evaluation is important to assess type of deafnes so that proper treatment can be suggested to the patients.This helps to predict the efficacy of hearing aid also to judge which ear needs to be fitted with the hearng aid
This document provides information about bone conducting hearing aid solutions. It discusses the types of hearing loss that can be treated with conventional hearing aids versus bone conducting hearing aids. It provides a brief history of hearing aid development. It then describes the basic structure and mechanism of bone conducting hearing aids, including the BAHA system. It outlines the prerequisites, candidates, operative technique and potential complications of bone conducting hearing aids. Overall, the document serves as an overview of bone conducting hearing aid solutions.
The document summarizes bone conduction hearing aids and the BAHA (Bone Anchored Hearing Aid) system. It discusses indications for BAHA, the surgical procedure, outcomes, advantages over conventional hearing aids, and limitations. BAHA provides an alternative for those who cannot use air conduction hearing aids due to ear canal issues or single-sided deafness. The surgery attaches a fixture to the skull bone which integrates and allows mounting of a sound processor externally on an abutment.
This document discusses principles for selecting amplification for children with hearing loss. It addresses choosing the routing of sound transmission via air conduction, bone conduction, or electrical stimulation. Bilateral amplification is generally recommended unless contraindicated. The style of hearing aid should consider factors like ear canal size and feedback risk, and BTEs are often preferred while the ear is growing. Earmold selection and replacement is important due to growth, and venting needs to avoid feedback while maintaining high frequencies. Safety concerns include batteries and volume controls.
Hearing aid technology has advanced significantly over the past 200 years. Early hearing aids from the 1800s were simply ear trumpets or acoustic horns. The first electronic hearing aid was invented in 1900. Transistor technology arrived in the 1940s-1950s, allowing for smaller devices. Digital technology in the 1980s enabled programmability and multiple channels of amplification. Recent advances include wireless connectivity between devices, rechargeability, noise reduction algorithms, automatic features, and expanded bandwidth to better support speech recognition. However, fitting targets and understanding of the impaired auditory system have sometimes lagged behind technological capabilities.
This document provides information on pure tone audiometry testing procedures including: the roles of both the patient and clinician in testing; how to conduct air and bone conduction tests; how to interpret audiograms including different types and configurations of hearing loss; definitions of terms like frequency, intensity, and masking; and descriptions of common equipment used like audiometers and inserts.
The document discusses implantable auditory devices (IADs) for hearing loss, including bone conduction implants. It provides details on indications for different IAD options and compares the Sophono device to percutaneous and transcutaneous BAHA systems. A preliminary prospective study showed that while all IADs provided benefit, the Sophono device resulted in better high frequency gain and smaller residual air-bone gaps than the BAHA Attract, though the BAHA Connect provided the highest overall gain. The Sophono was also found to have fewer late complications than the BAHA Connect.
This document discusses assessment of hearing through various tests and examinations. It provides information on:
1) Key facts about prevalence of hearing loss globally and projections for 2050 from WHO data.
2) Components of patient history taking and examinations for hearing assessment, including audiometric tests like pure tone audiometry and impedance audiometry.
3) Interpretation of audiometry results and how to identify types of hearing loss like conductive, sensorineural, and mixed based on air and bone conduction thresholds.
Hearing aids & implantable hearing devicesAnagha Anand
Hearing aids and implantable devices can help people with hearing loss. Conventional hearing aids consist of a microphone, amplifier and receiver. They come in different styles like behind-the-ear or in-the-ear. Bone anchored hearing aids use bone conduction to bypass the outer/middle ear. Cochlear implants have an internal and external component and provide electrical stimulation of the auditory nerve for severe-profound loss. Implantable hearing aids use direct mechanical vibration of the ossicles. Candidates for these devices have moderate-severe loss and limited benefit from conventional aids.
Pure tone audiometry is used to measure hearing thresholds using an audiometer. It generates pure tones of varying frequencies and intensities that are delivered to the patient's ears through headphones or bone conduction to determine the softest level they can hear at different frequencies. The results are plotted on an audiogram to identify the type and degree of any hearing loss. It is an important subjective test that provides frequency-specific information but relies on the patient's responses.
Active middle ear implants like the MED-EL Soundbridge provide an alternative treatment option for patients who are dissatisfied with or unable to use conventional hearing aids. The implant consists of a small transducer attached directly to the inner ear bones that bypasses the external ear canal and middle ear structures to deliver vibrations. It has advantages over hearing aids such as improved sound quality and reduced feedback and occlusion effects. The implant has shown durable hearing benefits over many years with high patient satisfaction rates and a low complication risk.
The document discusses various amplification systems for individuals with hearing impairments, including individual and group systems. It describes individual hearing aids, including the types (body-worn, behind-the-ear, in-the-ear), parts, how they function, and classifications. Group amplification systems discussed include hard-wire, induction loop, FM, and infrared systems. The induction loop and hard-wire systems are described in more detail regarding their components and advantages/disadvantages for classroom use.
This document discusses different types of hearing aids and their components. It describes traditional air conduction hearing aids such as behind-the-ear (BTE), in-the-ear (ITE), and in-the-canal (ITC) styles. It also discusses bone conduction hearing aids. The components of hearing aids discussed include the microphone, signal processor, receiver, and batteries. Zinc-air batteries commonly used in hearing aids and safety issues related to battery ingestion are covered. Microphone types including omnidirectional and directional microphones are described.
The document discusses middle ear implants as a type of hearing aid for patients with mild to severe hearing loss. It describes two main types of transducers used in middle ear implants - electromagnetic and piezoelectric. Several implant devices are discussed, including the Vibrant Soundbridge, Middle Ear Transducer (MET), Carina, and Esteem. Clinical trial results for some devices show significant improvement in functional gain and patient satisfaction compared to conventional hearing aids.
Pure tone audiometry is a test used to evaluate hearing thresholds across different frequencies. It involves presenting pure tones to a patient through headphones and determining the lowest volume they can detect at each frequency. Key information obtained includes the type, degree, and configuration of any hearing loss. PTA requires patient cooperation and provides an objective measure of hearing sensitivity. Proper testing conditions and techniques are important for accurate results.
The document provides an overview of audiological evaluation techniques, including:
1. Behavioral tests like play audiometry and pure tone audiometry that measure hearing sensitivity. Objective tests like ABR, OAEs, and electrocochleography are used for infants and difficult to test patients.
2. Middle ear assessment tools like tympanometry and acoustic reflex testing evaluate the function of the middle ear.
3. Evoked potential tests like ABR, ECochG and OAEs assess cochlear and neural hearing function without depending on behavioral responses. ABR in particular provides threshold information and can detect neurological abnormalities.
Clinical and audiological assessment of hearing
undergraduate level
MBBS
Presentation by Khair-Ullah and Sana-Ullah 4th year MBBS, Karachi, pakistan
ENT ward
The document discusses bone conduction hearing devices (BCHDs) and their components, functioning, advantages over conventional hearing aids, and surgical classifications. It provides details on the normal routes of bone conduction, components of acoustic and implantable hearing devices, pathophysiology of cochlear deafness addressed by implantable devices, and terminology used. It also outlines clinical indications and criteria for BCHDs as well as some limitations.
This document discusses electro-acoustic stimulation (EAS), which combines cochlear implantation for high frequencies with acoustic amplification for low frequencies. EAS aims to restore hearing in both high and low frequencies by using electric stimulation to improve hearing in high frequencies and acoustic amplification to improve residual hearing in low frequencies. Studies have found that EAS users score significantly higher on speech tests compared to users of hearing aids alone. The document discusses various EAS devices and features that aim to preserve residual hearing, such as shorter or thinner electrodes. It also covers aspects of the surgery and post-operative programming to optimize the benefits of combined electric and acoustic stimulation.
hearing evaluation is important to assess type of deafnes so that proper treatment can be suggested to the patients.This helps to predict the efficacy of hearing aid also to judge which ear needs to be fitted with the hearng aid
This document provides information about bone conducting hearing aid solutions. It discusses the types of hearing loss that can be treated with conventional hearing aids versus bone conducting hearing aids. It provides a brief history of hearing aid development. It then describes the basic structure and mechanism of bone conducting hearing aids, including the BAHA system. It outlines the prerequisites, candidates, operative technique and potential complications of bone conducting hearing aids. Overall, the document serves as an overview of bone conducting hearing aid solutions.
The document summarizes bone conduction hearing aids and the BAHA (Bone Anchored Hearing Aid) system. It discusses indications for BAHA, the surgical procedure, outcomes, advantages over conventional hearing aids, and limitations. BAHA provides an alternative for those who cannot use air conduction hearing aids due to ear canal issues or single-sided deafness. The surgery attaches a fixture to the skull bone which integrates and allows mounting of a sound processor externally on an abutment.
This document discusses principles for selecting amplification for children with hearing loss. It addresses choosing the routing of sound transmission via air conduction, bone conduction, or electrical stimulation. Bilateral amplification is generally recommended unless contraindicated. The style of hearing aid should consider factors like ear canal size and feedback risk, and BTEs are often preferred while the ear is growing. Earmold selection and replacement is important due to growth, and venting needs to avoid feedback while maintaining high frequencies. Safety concerns include batteries and volume controls.
Hearing aid technology has advanced significantly over the past 200 years. Early hearing aids from the 1800s were simply ear trumpets or acoustic horns. The first electronic hearing aid was invented in 1900. Transistor technology arrived in the 1940s-1950s, allowing for smaller devices. Digital technology in the 1980s enabled programmability and multiple channels of amplification. Recent advances include wireless connectivity between devices, rechargeability, noise reduction algorithms, automatic features, and expanded bandwidth to better support speech recognition. However, fitting targets and understanding of the impaired auditory system have sometimes lagged behind technological capabilities.
This document provides information on pure tone audiometry testing procedures including: the roles of both the patient and clinician in testing; how to conduct air and bone conduction tests; how to interpret audiograms including different types and configurations of hearing loss; definitions of terms like frequency, intensity, and masking; and descriptions of common equipment used like audiometers and inserts.
The document discusses implantable auditory devices (IADs) for hearing loss, including bone conduction implants. It provides details on indications for different IAD options and compares the Sophono device to percutaneous and transcutaneous BAHA systems. A preliminary prospective study showed that while all IADs provided benefit, the Sophono device resulted in better high frequency gain and smaller residual air-bone gaps than the BAHA Attract, though the BAHA Connect provided the highest overall gain. The Sophono was also found to have fewer late complications than the BAHA Connect.
This document discusses assessment of hearing through various tests and examinations. It provides information on:
1) Key facts about prevalence of hearing loss globally and projections for 2050 from WHO data.
2) Components of patient history taking and examinations for hearing assessment, including audiometric tests like pure tone audiometry and impedance audiometry.
3) Interpretation of audiometry results and how to identify types of hearing loss like conductive, sensorineural, and mixed based on air and bone conduction thresholds.
Hearing aids & implantable hearing devicesAnagha Anand
Hearing aids and implantable devices can help people with hearing loss. Conventional hearing aids consist of a microphone, amplifier and receiver. They come in different styles like behind-the-ear or in-the-ear. Bone anchored hearing aids use bone conduction to bypass the outer/middle ear. Cochlear implants have an internal and external component and provide electrical stimulation of the auditory nerve for severe-profound loss. Implantable hearing aids use direct mechanical vibration of the ossicles. Candidates for these devices have moderate-severe loss and limited benefit from conventional aids.
Pure tone audiometry is used to measure hearing thresholds using an audiometer. It generates pure tones of varying frequencies and intensities that are delivered to the patient's ears through headphones or bone conduction to determine the softest level they can hear at different frequencies. The results are plotted on an audiogram to identify the type and degree of any hearing loss. It is an important subjective test that provides frequency-specific information but relies on the patient's responses.
Active middle ear implants like the MED-EL Soundbridge provide an alternative treatment option for patients who are dissatisfied with or unable to use conventional hearing aids. The implant consists of a small transducer attached directly to the inner ear bones that bypasses the external ear canal and middle ear structures to deliver vibrations. It has advantages over hearing aids such as improved sound quality and reduced feedback and occlusion effects. The implant has shown durable hearing benefits over many years with high patient satisfaction rates and a low complication risk.
The document discusses various amplification systems for individuals with hearing impairments, including individual and group systems. It describes individual hearing aids, including the types (body-worn, behind-the-ear, in-the-ear), parts, how they function, and classifications. Group amplification systems discussed include hard-wire, induction loop, FM, and infrared systems. The induction loop and hard-wire systems are described in more detail regarding their components and advantages/disadvantages for classroom use.
This document discusses different types of hearing aids and their components. It describes traditional air conduction hearing aids such as behind-the-ear (BTE), in-the-ear (ITE), and in-the-canal (ITC) styles. It also discusses bone conduction hearing aids. The components of hearing aids discussed include the microphone, signal processor, receiver, and batteries. Zinc-air batteries commonly used in hearing aids and safety issues related to battery ingestion are covered. Microphone types including omnidirectional and directional microphones are described.
The document discusses middle ear implants as a type of hearing aid for patients with mild to severe hearing loss. It describes two main types of transducers used in middle ear implants - electromagnetic and piezoelectric. Several implant devices are discussed, including the Vibrant Soundbridge, Middle Ear Transducer (MET), Carina, and Esteem. Clinical trial results for some devices show significant improvement in functional gain and patient satisfaction compared to conventional hearing aids.
Pure tone audiometry is a test used to evaluate hearing thresholds across different frequencies. It involves presenting pure tones to a patient through headphones and determining the lowest volume they can detect at each frequency. Key information obtained includes the type, degree, and configuration of any hearing loss. PTA requires patient cooperation and provides an objective measure of hearing sensitivity. Proper testing conditions and techniques are important for accurate results.
The document provides an overview of audiological evaluation techniques, including:
1. Behavioral tests like play audiometry and pure tone audiometry that measure hearing sensitivity. Objective tests like ABR, OAEs, and electrocochleography are used for infants and difficult to test patients.
2. Middle ear assessment tools like tympanometry and acoustic reflex testing evaluate the function of the middle ear.
3. Evoked potential tests like ABR, ECochG and OAEs assess cochlear and neural hearing function without depending on behavioral responses. ABR in particular provides threshold information and can detect neurological abnormalities.
Clinical and audiological assessment of hearing
undergraduate level
MBBS
Presentation by Khair-Ullah and Sana-Ullah 4th year MBBS, Karachi, pakistan
ENT ward
The document discusses bone conduction hearing devices (BCHDs) and their components, functioning, advantages over conventional hearing aids, and surgical classifications. It provides details on the normal routes of bone conduction, components of acoustic and implantable hearing devices, pathophysiology of cochlear deafness addressed by implantable devices, and terminology used. It also outlines clinical indications and criteria for BCHDs as well as some limitations.
This document discusses electro-acoustic stimulation (EAS), which combines cochlear implantation for high frequencies with acoustic amplification for low frequencies. EAS aims to restore hearing in both high and low frequencies by using electric stimulation to improve hearing in high frequencies and acoustic amplification to improve residual hearing in low frequencies. Studies have found that EAS users score significantly higher on speech tests compared to users of hearing aids alone. The document discusses various EAS devices and features that aim to preserve residual hearing, such as shorter or thinner electrodes. It also covers aspects of the surgery and post-operative programming to optimize the benefits of combined electric and acoustic stimulation.
Electric acoustic stimulation (EAS) combines acoustic hearing preservation with electric stimulation from a cochlear implant. EAS aims to preserve residual low-frequency hearing while providing stimulation for high frequencies not heard. The history of cochlear implants led to the development of EAS. EAS surgery techniques aim to insert the electrode array atraumatically to avoid hearing loss. Outcomes of EAS include successful hearing preservation in 75% of subjects long-term and significantly improved speech perception compared to acoustic hearing alone. EAS also provides benefits for music appreciation and subjective hearing benefits.
Cochlear implants are hearing prosthetics that can restore hearing for those with severe to profound hearing loss. They consist of external and internal components. The external components collect sound, process it and transmit signals to the internal implant. The internal implant stimulates the auditory nerve to provide a sense of sound. Candidates undergo testing, counseling and rehabilitation training. If approved, they have surgery to implant the device, then attend programming sessions to tune the implant to their hearing needs through mapping. Ongoing listening practice and support from a cochlear implant team helps the recipient learn to hear and understand sound.
• Hearing loss is widely recognized as one of the most common human disorders. (Nipalko J.K., 2002). Hearing loss affects up to 10% of the population. The prevalence increases with age and over one third of people older than 65 years have a significant hearing loss. Only approximately 20% of people with hearing loss seek assistance from hearing aids, of these, as many as 16.2% do not wear their devices.
• It has been reported that 5 of 10,000 infants less than 2 years of age are profoundly hearing impaired. They are unable to hear any sound from the outside world.
• The problem is critical for adults and dramatic for children. Early onset profound hearing loss has been shown to have devastating consequences for the development of language that is essential for learning almost anything. It allows us to participate, to understand, to interact with the world around us, and to avoid social isolation. (Moeller, 1998)
• Sensorineural hearing loss is caused by defect of the inner ear or central auditory pathways. Treatment is dependent on the degree of hearing impairment. Hearing aids are indicated for mild to severe sensorineural hearing loss. In patients with severe to profound hearing loss due to cochlear defects or any abnormalities will result in severe handicap. To overcome this severe handicap, application of implantable hearing aids is indicated.
This document provides an overview of cochlear implants, including:
- A cochlear implant is an electronic device that converts sound into electrical signals to stimulate the auditory nerve for people who are profoundly deaf.
- It has both external and internal components, with the external parts worn behind the ear and the internal parts surgically implanted.
- Candidates for cochlear implants include adults and children over 12 months old with severe-to-profound hearing loss who get limited benefit from hearing aids.
- The surgical procedure to implant the device involves making an incision to access the inner ear and inserting an electrode array to stimulate the auditory nerve. Extensive testing and rehabilitation is required post
Cochlear implants are surgically implanted devices that provide a sense of sound to those who are profoundly deaf or severely hard of hearing. They work by bypassing the damaged sensory cells in the cochlea and directly stimulating the auditory nerve. The first modern cochlear implant was developed in 1961 and approved for use in adults in the United States in 1984. Since then, approval has expanded to younger patients as young as 12 months old. Cochlear implants have three main parts - an external portion that picks up sound and processes it, a transmitter that sends the signal to the internal receiver, and an electrode array that is inserted into the cochlea to stimulate the auditory nerve. Successful implantation requires extensive testing to
Cochlear implants are surgically implanted devices that provide a sense of sound to those who are profoundly deaf or hard of hearing. They work by bypassing the damaged portions of the ear and directly stimulating the auditory nerve. The first modern cochlear implant was developed in 1961 and they have since become smaller and more advanced, allowing for implantation in younger children. Cochlear implants require extensive preoperative testing and evaluation to determine candidacy as well as postoperative programming and mapping to optimize hearing outcomes for each individual recipient.
Recent advances have expanded cochlear implant candidacy criteria in several ways:
(1) Younger pediatric patients down to 12 months can now receive implants, as early implantation leads to better language outcomes. (2) Adults who gain limited benefit from hearing aids and have speech recognition scores below 50% are candidates. (3) Patients with residual low-frequency hearing may be candidates for hybrid cochlear implants and hearing aids. New technologies continue to broaden candidacy and improve outcomes for patients.
Cochlear implants are surgically implanted devices that provide a sense of sound to those who are profoundly deaf or severely hard of hearing. They work by bypassing the damaged portions of the ear and directly stimulating the auditory nerve. The first modern cochlear implant was developed in 1961 and approved for use in adults in the United States in 1984. Since then, approval has expanded to younger patients. Cochlear implants require surgery to implant the internal device and external components are used to process sounds and transmit signals to the internal device. Proper patient selection and post-operative rehabilitation are important for achieving the best outcomes with cochlear implants.
Thia presentation is about how to assess hearing loss, how to categorise it, how to investigate it, and finally how to rehabilitate the deaf people of different ages
This document defines and describes the components and types of hearing aids. It discusses the main parts of hearing aids including microphones, amplifiers, receivers, batteries, and ear molds. It describes the different types of hearing aids such as behind-the-ear, in-the-canal, and in-the-ear. The document also covers factors considered in fitting hearing aids like using binaural versus monaural fittings and which ear to fit based on audiometric results and patient needs.
definition of cochlear implant , history of the procedure , purpose of the procedure , indications for cochlear implant , surgical procedure , risk of cochlear implant surgery , post operative care , normal result
This document discusses deafness and hearing loss. It defines different types and degrees of hearing loss. Conductive hearing loss occurs when sound is not conducted properly through the outer or middle ear. Sensorineural hearing loss occurs due to damage to the inner ear or auditory nerve. Mixed hearing loss has both conductive and sensorineural components. Rehabilitation methods are described including hearing aids, bone anchored hearing aids, cochlear implants, and auditory brainstem implants. Types of hearing aids and how they work are explained. Speech reading, auditory training, and education of the deaf are important rehabilitation strategies. The overall message is that untreated hearing loss is more noticeable than using hearing aids or other assistive devices.
This document defines hearing loss and its various types, including conductive, sensorineural, central/functional, and mixed hearing loss. It discusses the causes of hearing loss such as impacted cerumen, trauma, meningitis, and prolonged noise exposure. The document also covers the diagnosis of hearing loss using tests like audiometry and tympanometry. Treatment options discussed include hearing aids, cochlear implants, lip reading, and sign language. Prevention methods include avoiding loud noises and protecting the ears from injury.
The document describes the anatomy and physiology of the human ear, including the outer, middle, and inner ear. It discusses how sound is transmitted through the ear canal to the eardrum and ossicles of the middle ear, then into the cochlea of the inner ear where vibrations are transduced into nerve impulses. Common ear disorders like conductive hearing loss, sensorineural hearing loss, Meniere's disease, and otitis media are outlined along with their symptoms and treatments, which include hearing aids and cochlear implants.
Middle ear implants are used to overcome the limitations of conventional hearing aids. They include both partially and fully implantable devices that bypass the external ear canal and transmit sound directly through vibrations in the middle ear. The Vibrant Soundbridge is a widely used semi-implantable device that couples a transducer to the ossicles or round window. Fully implantable devices like the Carina and Esteem are also described. Key factors in selecting candidates and the surgical approach depend on the degree and type of hearing loss, as well as individual anatomy.
Similar to Carina Monika Lehnhardt Yerevan 2009 (20)
Richard Brook: Nucleus Cochlear Implants - Presentation St. Petersburg May 2009similei
Richard Brook, President of Cochlear Europe, Middle East & Africa, welcomed attendees to the Monsana Conference in St. Petersburg. Cochlear is a global leader in implantable hearing solutions, including cochlear implants, Baha systems, and hybrid devices. With over 2,000 employees and products sold in over 100 countries, Cochlear invests 13% of sales in R&D and has an estimated 70% market share of the cochlear implant market, serving over 120,000 recipients worldwide. Cochlear's focus areas presented were continuing to improve hearing performance, developing smaller and better processors, simplifying the process for professionals, ensuring patients can use new technologies, and setting new standards of product reliability.
Neonatal Hearing Screening. Erewan, September 2009similei
1) A significant hearing impairment is the most frequent disorder in newborns, affecting 1-3 babies per 1,000, and 2-4 per 100 risk babies.
2) Neonatal hearing screening is justified for all newborns due to the high incidence and long-term negative effects of untreated hearing impairment or deafness.
3) In Germany, a law for neonatal hearing screening passed in 2009 but implementation varies greatly between states due to lack of equipment, training, data processing, counseling, and financing.
St Petersburg Presentation Parents Club-Valentina Balabanovaвалентина балобановаsimilei
Presentation by Valentina Balobanova from St. Petersburg (Валентина Балобанова). She is telling about the Parents and CI Children´s Club and its activities. This presentation was given at the First Monsana Conference in St. Petersburg in May 2009 and is in Russian.
Binomial statistics describes experiments with binary outcomes like pass/fail. The document discusses:
1) Pass/fail tests at different frequency levels to diagnose hearing loss.
2) Measuring otoacoustic emissions and auditory brainstem responses to further evaluate hearing.
3) Comparing results to norms to determine the degree of potential hearing impairment.
Neonatal Hearing Screening An Overview On The Situation In Western Europe 2...similei
Text of Dr. Monika's Presentation: Neonatal Hearing screening an overview of the situtation in Western Europe 2009, held in St. Petersburg in May 2009 at the First Monsana Conference.
2009 05 Michael Goriany PräSentation Parents Networksimilei
Presentation given byDr. Michael Goriany at the first Monsana Conference in St. Petersburg in May 2009. http://www.monsana.net/firstconference. Describes how parents of children wearing cochlear implants can network with each other via internet, can profit of each others experience and can even get online rehabilitation from home.
Reha Of CI Children Possible Outcomes Yvonne Haverssimilei
Language: English. Yvonne Havers from the Cochlear Implant Rehabilitation Centers explains how children with a CI develop and what kind and quality of outcomes can be expected when they undergo proper rehabilitation. The Cochlear Implant Center Friedberg, Germany is very experienced in the field of rehabiliation of CI Children. This presentation was given at the first monsana conference in St. Petersburg in May 2009. See also www.monsana.net/firstconference
Fitting and Reha Of CI Children At CIC Friedberg Yvonne Haverssimilei
Language: English: Yvonne Havers from the Cochlear Implant Rehabilitation Center in Friedberg, Germany explains how this very experienced center performs fitting and rehabilitation of Children with a Cochlear Implant. Different Methods and Setups are described and the Center and the whole team are presented (photos). This presentation was given at the first Monsana Conference in St. Petersburg, Russia in May 2009. See also www.monsana.net/firstconference
This presentation describes the importance of neonatal hearing screening, ie. to check if babies can hear. Only if babies are checked and diagnosed early can they undergo best optimal treatment. This presentation was given at the first Monsana Conference in St. Petersburg. Please also check the blog http://www.monsana.net/firstconference
TEST BANK For Basic and Clinical Pharmacology, 14th Edition by Bertram G. Kat...rightmanforbloodline
TEST BANK For Basic and Clinical Pharmacology, 14th Edition by Bertram G. Katzung, Verified Chapters 1 - 66, Complete Newest Version.
TEST BANK For Basic and Clinical Pharmacology, 14th Edition by Bertram G. Katzung, Verified Chapters 1 - 66, Complete Newest Version.
TEST BANK For Basic and Clinical Pharmacology, 14th Edition by Bertram G. Katzung, Verified Chapters 1 - 66, Complete Newest Version.
TEST BANK For Basic and Clinical Pharmacology, 14th Edition by Bertram G. Katzung, Verified Chapters 1 - 66, Complete Newest Version.
Local Advanced Lung Cancer: Artificial Intelligence, Synergetics, Complex Sys...Oleg Kshivets
Overall life span (LS) was 1671.7±1721.6 days and cumulative 5YS reached 62.4%, 10 years – 50.4%, 20 years – 44.6%. 94 LCP lived more than 5 years without cancer (LS=2958.6±1723.6 days), 22 – more than 10 years (LS=5571±1841.8 days). 67 LCP died because of LC (LS=471.9±344 days). AT significantly improved 5YS (68% vs. 53.7%) (P=0.028 by log-rank test). Cox modeling displayed that 5YS of LCP significantly depended on: N0-N12, T3-4, blood cell circuit, cell ratio factors (ratio between cancer cells-CC and blood cells subpopulations), LC cell dynamics, recalcification time, heparin tolerance, prothrombin index, protein, AT, procedure type (P=0.000-0.031). Neural networks, genetic algorithm selection and bootstrap simulation revealed relationships between 5YS and N0-12 (rank=1), thrombocytes/CC (rank=2), segmented neutrophils/CC (3), eosinophils/CC (4), erythrocytes/CC (5), healthy cells/CC (6), lymphocytes/CC (7), stick neutrophils/CC (8), leucocytes/CC (9), monocytes/CC (10). Correct prediction of 5YS was 100% by neural networks computing (error=0.000; area under ROC curve=1.0).
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Carina Monika Lehnhardt Yerevan 2009
1. OTOlogics
Carina the fully implantable
hearing solution
Dr. Dr. h.c. Monika Lehnhardt
Yerevan , September 4, 2009
2. OTOlogics
Established in 1996 in Boulder, Colorado
Our focus is on middle ear implants (MEI)
Products:
Carina fully implantable
MET semi-implantable hearing system
Implanted in more than 80 clinics worldwide
+ 800 patients benefit from Otologics technology
3. The Fully Implantable Hearing System
Carina
CE mark for SNHL Oct. 2006
CE mark for CMHL in 2007
4. Carina
The fully implantable hearing system
Microphone
Communication
coil
Rechargeable battery
Transducer Digital
signal-processor
5. Carina Accessories
Charging station
- On / Off
- Louder/Softer Remote:
- On / Off
- Louder/Softer
6. Battery Life
Battery Service Life profile from accelerated life test data. Assumes complete
discharge, 50 mAh battery and an implantable middle ear hearing device
7. Location of the microphone
Mounting plate Transducer
Capsule
Microphone
8. Sensorineural Hearing Loss
Patients with a normal middle ear anatomy
And with a mobile ossicular chain
Transducer simply placed in contact with the incus
9. Audiological Guidelines
Hearing loss, preferably not exceeding 70dB HL
Pure tone air and bone conductions must be within this range
Preserved speech discrimination
Experience in using hearing aids is preferable
10. Indications
For patients with
Ear canal complications (size, allergies, reactions )
Hearing aid users with dermatitis, psoriasis,
chronic external otitis
And those working in challenging environments
(water, dust)
Removes the stigma of wearing an external device
11. Conductive Hearing Loss
Flexible placement options of the transducer
Delivers clear and powerful acoustic signals to the cochlea
Stapes Round Window Oval Window
13. Mixed Hearing Loss
Audiological guidelines:
SNHL preferably not exceeding 70dB HL
Preserved speech discrimination scores
Indications:
Otosclerosis
Healed cholesteatoma with a sensorineural component
Stabilized chronic otitis media with a sensorineural
component
Cases of conductive hearing loss with a growing
deterioration of sensorineural hearing
14. Conclusions
MET and Carina cover a broad range of the hearing loss
Safe surgeries - no risk - fully reversible
Very stable implanting systems
Carina:
ü indicated for multiple hearing loss profiles
ü many options for middle ear stimulation
ü an invisible hearing system
ü a unique alternative for
severe mixed hearing loss
working in challenging conditions