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Exam (elaborations)

COMD 3700 Exam 4 Latest Update

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COMD 3700 Exam 4 Latest Update ...

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  • August 9, 2024
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  • Exam (elaborations)
  • Questions & answers
  • COMD 3700
  • COMD 3700
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COMD 3700 Exam 4 Latest Update
what is immittance testing? - Answer It is used to diagnose and evaluate the status of
the middle ear and inner ear

It measures tympanic membrane impedance, admittance and compliance

Immittance testing uses _______ and _______ on the outer and middle ear. - Answer
pressure and movement

Immittance Testing Equipment - Answer 1. Miniature loudspeaker that produces a pure
tone (referred to as a probe tone)

2. Monitor microphone- picks up sound and converts to electrical signal

3. Pressure pump and manometer

4. Ipsilateral reflex loudspeaker

5. Probe tip

What is a manometer? - Answer it quantifies air pressure within the ear canal

Which instrument of immittance equipment creates a hermatic seal? - Answer probe tip

Which instrument in immittance testing is used to monitor the probe sound in the ear
canal? - Answer Monitor microphone

Ipsilateral reflex loud speaker - Answer measure acoustic reflex testing

T/F: The monitor microphone measures the incidence wave introduced to the speaker,
and the reflective wave as it returns from the tympanic membrane. - Answer True

What level of sound does the probe tone loud speaker produce? - Answer 85 dB SPL at
226 Hz

what is tympanometry? - Answer An electronic and acoustic measurement technique
used to rule out outer and middle ear disorders

T/F: Immittance testing should be done only AFTER an otoscopy. - Answer True

Typanogram configurations (3) - Answer Pressure, compliance, volume

Which tympanogram configuration represents the x-axis? - Answer Pressure

Which tympanogram configuration represents the y-axis? - Answer Compliance

If the TM pushes away from you, it means the pressure is ___________. - Answer positive

If the TM pulls toward you, it means the pressure is ___________. - Answer negative

, If the volume of the ear is particularly large, this means ________. - Answer There is a
perforated TM or open PE tube.

If the volume of the ear is particularly small, this means ________. - Answer There is otitis
media or excessive wax.

Normal ear canal volume for a child is _________. - Answer 0.3 to 1.0

Normal ear canal volume for an adult is _________. - Answer 1.0 to 2.0

Normal range of pressure peak is _________. - Answer -150 to +50 daPa (-200 is
borderline)

Abnormal results of As are indicative of what conditions? (4) - Answer 1.
Tympanosclerosis

2. Ossicular fixation

3. Scarred (plaque covered) TM

4. Hearing loss

Type A Tympanogram - Answer Normal shape

Intact eardrum

Functioning Eustachian tube

Normal muscles and ligaments

No outer or middle ear pathology

What does a Type A tympanogram look like? - Answer

Type As Tympanogram - Answer S = Shallow or Stiff

Normal pressure

Low Compliance

Ossicular Fixation

Tympanosclerosis

also referred to as "glue ear"

What does a Type As tympanogram look like? - Answer

Type Ad Tympanogram - Answer D = Deep or Disarticulated or Discontinuous

Normal Pressure

Normal ECV

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