Exam 3 - Study Guide UPDATED ACTUAL Questions And Correct Answers
C
Terms in this set (92)
TYMPANOGRAM Graphic display reflecting the volume, compliance, and pressure of the outer and
middle ear systems
Type A Tympanogram
Type As Tympanogram
Type Ad Tympanogram
Type B Tympanogram
Type C Tympanogram
Tympanograms DO NOT tell you if there is a hearing loss but can tell you the type of hearing loss
- can point to what TYPE of hearing loss may be present
Tympanograms ONLY tell you if the physical mechanisms of the outer and middle ear are functioning
Tympanograms also tell you the - volume of the external auditory meatus (ear canal) and
- if there is fluid or another blockage in the ear
TYMPANOMETRY An evaluation of the physical working properties of the middle ear system based
on the mathematical principles of pressure, compliance, and volume
- a procedure that allows us to examine the functioning of the middle ear system
indirectly, by using measures of pressure and movement of the outer and middle
ears as they work together as complementary systems
, Tympanometry DOES NOT give us a measure of hearing; rather, it measures the mobility (compliance) of the eardrum
as pressure is systematically varied in the external ear canal
TYMPANOMETRIC PRESSURE The measure of pressure in the middle ear cavity referencing normal atmospheric
pressure measured in daPa.
- these values are plotted on the horizontal (x) axis of the tympanogram
TYMPANONMETRIC COMPLIANCE The flexibility of the eardrum when different air pressures are introduced. The
level of flexibility indicates how effectively sound is transmitted into the ear
EAR CANAL VOLUME (ECV) The volume, measured in cubic centimeters or ML, of the external ear canal
5 types of Tympanograms - Liden-Jerger Type A
Type As
Type Ad
Type B
Type C
Type A Tympanogram - Normal reading
- Peak pressure is situated between +50 daPa/mmH20 and -100 daPa/mmH2O
- normal peak compliance is between 0.25 & 1.05mmho/cc/mL for children and 0.3
& 1.7mmho/cc/mL for adults.
- If audiogram results indicate a hearing loss and the tympanogram results are this
type, this would indicate that the HL is sensorineural in nature.
- (there is nothing wrong conductively [outer or middle ear wise])
Type As Tympanogram - has a shallow peak, meaning that the peak is low.
- compliance value is <0.25mmho/cc/mL for children and <0.3mmho/cc/mL for
adults..
- indicates that there is a stiffness of the eardrum.
"Etiologies: otosclerosis, middle ear effusion, excessive scarring or thickening of
the eardrum, or plaque on the eardrum (the last two are caused by chronic ear
infections)
Type Ad Tympanogram - has a very deep (high) peak.
- Peak pressure and the value of the ECV (volume) are within the normal range but
the compliance is exaggerated.
- indicates that there is an excessive of mobility of the eardrum (compliance).
- Etiologies: "disarticulation or disconnection of the middle ear ossicles, minor
scar tissue, or a very thin/single layer eardrum
Type B Tympanogram - has no peak at all, it's just a flat line.
- has no compliance
- The ECV is the determining factor in this type of tympanogram: it can be normal,
excessively small, or excessively large.
- indicates that there is no movement of the eardrum.
- In order to determine the etiologies, the ECV results and a visual inspection must
be completed.
- Etiologies: a blockage, whether a buildup of earwax or a foreign object. A
bulging eardrum from excess pressure or perforation of the eardrum will also
give this type with varying ECV.
- usually indicates a conductive or mixed hearing loss
C
Terms in this set (92)
TYMPANOGRAM Graphic display reflecting the volume, compliance, and pressure of the outer and
middle ear systems
Type A Tympanogram
Type As Tympanogram
Type Ad Tympanogram
Type B Tympanogram
Type C Tympanogram
Tympanograms DO NOT tell you if there is a hearing loss but can tell you the type of hearing loss
- can point to what TYPE of hearing loss may be present
Tympanograms ONLY tell you if the physical mechanisms of the outer and middle ear are functioning
Tympanograms also tell you the - volume of the external auditory meatus (ear canal) and
- if there is fluid or another blockage in the ear
TYMPANOMETRY An evaluation of the physical working properties of the middle ear system based
on the mathematical principles of pressure, compliance, and volume
- a procedure that allows us to examine the functioning of the middle ear system
indirectly, by using measures of pressure and movement of the outer and middle
ears as they work together as complementary systems
, Tympanometry DOES NOT give us a measure of hearing; rather, it measures the mobility (compliance) of the eardrum
as pressure is systematically varied in the external ear canal
TYMPANOMETRIC PRESSURE The measure of pressure in the middle ear cavity referencing normal atmospheric
pressure measured in daPa.
- these values are plotted on the horizontal (x) axis of the tympanogram
TYMPANONMETRIC COMPLIANCE The flexibility of the eardrum when different air pressures are introduced. The
level of flexibility indicates how effectively sound is transmitted into the ear
EAR CANAL VOLUME (ECV) The volume, measured in cubic centimeters or ML, of the external ear canal
5 types of Tympanograms - Liden-Jerger Type A
Type As
Type Ad
Type B
Type C
Type A Tympanogram - Normal reading
- Peak pressure is situated between +50 daPa/mmH20 and -100 daPa/mmH2O
- normal peak compliance is between 0.25 & 1.05mmho/cc/mL for children and 0.3
& 1.7mmho/cc/mL for adults.
- If audiogram results indicate a hearing loss and the tympanogram results are this
type, this would indicate that the HL is sensorineural in nature.
- (there is nothing wrong conductively [outer or middle ear wise])
Type As Tympanogram - has a shallow peak, meaning that the peak is low.
- compliance value is <0.25mmho/cc/mL for children and <0.3mmho/cc/mL for
adults..
- indicates that there is a stiffness of the eardrum.
"Etiologies: otosclerosis, middle ear effusion, excessive scarring or thickening of
the eardrum, or plaque on the eardrum (the last two are caused by chronic ear
infections)
Type Ad Tympanogram - has a very deep (high) peak.
- Peak pressure and the value of the ECV (volume) are within the normal range but
the compliance is exaggerated.
- indicates that there is an excessive of mobility of the eardrum (compliance).
- Etiologies: "disarticulation or disconnection of the middle ear ossicles, minor
scar tissue, or a very thin/single layer eardrum
Type B Tympanogram - has no peak at all, it's just a flat line.
- has no compliance
- The ECV is the determining factor in this type of tympanogram: it can be normal,
excessively small, or excessively large.
- indicates that there is no movement of the eardrum.
- In order to determine the etiologies, the ECV results and a visual inspection must
be completed.
- Etiologies: a blockage, whether a buildup of earwax or a foreign object. A
bulging eardrum from excess pressure or perforation of the eardrum will also
give this type with varying ECV.
- usually indicates a conductive or mixed hearing loss
