Quiz 1 Flashcards
What is the primary difference between active and passive bone conduction implants?
- Passive devices require surgical placement of the transducer under the skin
- Active devices have an implanted transducer that generates vibration directly to bone
- Passive devices transmit sound via air conduction
- Active devices depend on skin pressure to transmit sound
- Active devices have an implanted transducer that generates vibration directly to bone
Active: implanted; implant generates vibration directly applied to the bone
Passive: Transducer is impeded in the speech processor. Sound processor generates stimulation that is applied from outside onto the skin. Less optimal; skin attenuates sound before it reaches the bone.
Which of the following is a fully implantable middle ear device?
- SAMBA 2
- Vibrant Soundbridge
- MAXUM
- Envoy Esteem
Envoy esteem
What is the primary benefit of bone anchored implants for individuals with single-sided deafness?
- Reduction of the head shadow effect, improving speech recognition when sound comes from the poorer ear side
- Enhanced ability to localize sounds using binaural cues
- Improved hearing in noise due to bilateral input
- All of the above
Reduction of the head shadow effect, improving speech recognition when sound comes from the poorer ear side
Which system uses a piezoelectric transducer for mechanical sound generation?
MED-EL BONEBRIDGE
Oticon Ponto
Cochlear Osia
Sophono Alpha 2
Cochlear Osia
* Envoy Esteem is also piezo
Which of the following is a true limitation of piezoelectric transducers in MEIs?
- Limited output and narrow bandwidth make them unsuitable for moderate-severe HL
- They require battery replacements every few days
- They produce excess mechanical feedback
- Output is dependent on the distance between the magnet and coil
Limited output and narrow bandwidth make them unsuitable for moderate-severe HL
Which of the following is not an indication for the Vibrant Soundbridge middle ear implant?
- Normal middle ear anatomy
- Sensorineural hearing loss
- Word recognition scores of at least 50%
- Age 12 years and older
Age 12 years and older
What makes electromechanical transducers more reliable than electromagnetic transducers?
- They require no surgery
- They do not require external power sources
- They eliminate variability in magnet-coil distance
- They have lower output and narrower bandwidth
They eliminate variability in magnet-coil distance
* they are housed together
Why do transcutaneous BCDs often have less efficient sound transmission compared to percutaneous systems?
- The skin attenuates the vibratory signal
- They use piezoelectric transducers
- They are not fixed by osseointegration
- They require higher powered batteries
The skin attenuates the vibratory signal
Which of the following statements about the Baha Connect system is TRUE?
- It does not require osseointegration
- It relies solely on adhesive pads for fixation
- It is not MRI compatible
- It uses a TiOblast™ surface to enhance osteoblast migration
It uses a TiOblast™ surface to enhance osteoblast migration
* type of osseointegration
The MED-EL Vibrant Soundbridge is FDA-approved for the treatment of conductive hearing loss.
True or False
FALSE
* CHL is a contraindiaction
In the Envoy Esteem middle ear implant system, which component is surgically coupled to the incus?
* Sensor
* Driver
* FMT
* Magnet
SENSOR
* The Esteem sensor is coupled to the body of the incus and contains a piezoelectric transducer that converts the movement of the incus into an electrical signal which is delivered via a lead to the Esteem sound processor.
Which of the following is a non-surgical bone conduction device?
Sophono
Cochlear Baha Attract
Oticon Ponto
MED-EL ADHEAR
MED-EL ADHEAR
* cochlear 5 Softband & soundarc
Which transducer type in MEIs has the disadvantage of output varying with distance?
Electromagnetic
How is the magnet in the MAXUM system activated to vibrate the ossicular chain?
By electromagnetic signals from an in-canal processor coil
By external piezoelectric transducer
By electrical impulses through the auditory nerve
By electrical signal generated by the external speech processor
By electromagnetic signals from an in-canal processor coil
What is the minimum age at which a child can be considered for surgical implantation of a percutaneous bone conduction hearing device?
3 years old
5 years old
8 years old
12 years old
5 years old
Which of the following is NOT an FDA-approved indication for the Envoy Esteem middle ear implant?
Unaided word recognition score of ≥40%
Moderate to severe sensorineural hearing loss
Conductive hearing loss without ossicular chain involvement
Minimum of 30 days of appropriately fit hearing aid use
Unaided word recognition score of ≥40%
In bone conduction implants, how is the process of osseointegration best defined?
* The biological adhesion of bone cells to the surface of a titanium implant, forming a stable and functional connection
* Surgical placement of a titanium screw into the mastoid bone
* The transmission of mechanical vibrations across the skin via a transcutaneous system
* The process of securing the abutment to the skull in a one-stage surgical procedure
The biological adhesion of bone cells to the surface of a titanium implant, forming a stable and functional connection
In implantable and non-surgical bone conduction devices, what is the name of the component that attaches the sound processor to an abutment, magnet, or softband?
Snap coupling
Floating mass transducer
Magnet
Sensor
Snap coupling
According to FDA guidelines, which type and degree of hearing loss typically qualifies a patient for a middle ear implant?
Moderate to moderately severe sensorineural hearing loss
Mild to moderately severe sensorineural hearing loss
Moderate to profound sensorineural hearing loss
Any degree or type of hearing loss
Moderate to moderately severe sensorineural hearing loss
The sensor and driver on the Esteem middle ear implant are examples of piezoelectric transducers.
True or False
TRUE
