Term
Recording OAEs:
-Input ___ data
-Choose appropriate test ___ (DP or TE)
-Test in ___ room; does not need to be a ___
-___ probe assembly to ear with a probe tip
-Get an airtight (___) seal |
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Definition
| demographic; type; quiet; booth; Couple; hermetic |
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Term
Test Environment:
-Present f1 at ___ dB SPL and f2 at ___ dB SPL
-___ OAE measures. Amplitudes should be +/- __ dB
-Infants and children may have ___ noise levels than adults
-Schedule so sleep-deprived children may ___
-May use ___ |
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Definition
| 65; 55; Repeat; 2; higher; nap; distractors |
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Term
DPOAE Protocol: Stimulus Levels
-f1 presented at ___ dB SPL (L1-level 1)
-f2 presented at ___ dB SPL (L2)
-Generally, tones are presented at __-__ dB SPL
-2f1-f2 is the most ___ DPOAE |
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Definition
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Term
Stimulus Parameters: DPOAE Screen
-L1 and L2 stimuli: DP stimlus levels in dB ___
-F2/F1: ratio between DP stimulus ___
-Test time: total recording time in ___
-Status: current type of ___ |
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Definition
SPL; frequencies; seconds; activity
[image] |
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Term
DPOAE Test Protocol:
-Fast fourier transform analysis (FFT) is done in ___ ___ at and around the frequency corresponding to 2f1-f2. Is taking a snapshot
-Amplitude of the noise will be ___ between the "2f1-f2" and adjacent bins
-OAE energy will only exist in "____ bin"
-OAE is present if energy in the "2f1-f2: is more ___ than adjacent |
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Definition
| frequency bins; similar; "2f1-f2"; similar; intense |
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Term
Results: DP Gram-Goes from Top to Bottom
-Gray box=___
-Gray diamond=___
-Red circles: OAD ___ as a function of f2; reflects ___ health at the point on basilar membrane corresponding to f2
-Blue lines: normal range for OAE ___
-Gray lines: normal range for ___ ___
-Green Triangle: ___ ___
[image] |
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Definition
| L1; L2; amplitude; cochlear; amplitude; noise floor; noise floor |
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Term
Noise Floor and DP Gram:
-Ideally, display shows ___ percentile noise level for normal adults
-Want noise ___ that level if possible
-NF amplitude should be at or below __ dB SPL
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Definition
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Term
Types of Noise:
-____ noise is caused by respiration, blood flow, and body movements
-___ noise is from air conditioners, tester noise, etc.
-___ noise is electrical, etc. |
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Definition
| physiologic; ambient; equipment |
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Term
Noise Levels: DPOAE Screen
-Nlo: # of sweeps ___ and ___; data accepted when noise level is ___ the noise reject level set
-Nhi: # of sweeps ___; data is rejected when noise level is ___ the noise reject level set
[image] |
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Definition
| accepted; processed; below; rejected; above |
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Term
Test Modes: DPOAE Screen
-Test modes are at the bottom of the screen
-General ___
-General ___
- ___ screening
-Neonate ___
-Important: choose a "neonate" mode when testing ___ and ___ |
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Definition
| diagnostic; screening; Neonate; diagnostic; newborns; infants |
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Term
Considerations When Interpreting DPOAEs:
-Repeatability of OAE responses. Repeatable within +/- __ dB
-___ amplitude of OAE response
-OAE-___ ___ difference
-Absolute amplitude ___ |
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Definition
| 2; Absolute; Noise floor (NF); noise |
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Term
-Absolute amplitude is ___ dependent
-Mean values range from __ dB SPL to __ dB SPL
-Most intense DPOAE usually occur at F2 around ___ Hz
-A "dip" in amplitude may occur when F2 is near ___ Hz
-Normative data: Boys Town (Gorga) or Vanderbilt (Hall)
-Normal ranges usually displayed on the OAE test ___
-Question the presence of OAEs when DPOAE amplitude is below __ dB SPL |
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Definition
| frequency; 5; 15; 1200; 3000; screen; 0 |
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Term
Interpretation-Normal:
-OAE-NF difference is at least __ dB
-OAE absolute amplitude exceeds ___ level-red line is above blue line |
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Definition
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Term
Interpretation-Absent:
-DP-NF difference is ___ than 6 dB (and NF is acceptably low)
-At 1000 Hz and lower frequencies noise levels should be at or below ___ dB SPL
-At 2000 Hz noise levels should be at or below __ dB SPL
-Absolute amplitude of OAE is ___ required criterion level
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Definition
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Term
Interpretation-Present but abnormal:
-OAE-NF difference is at least __ dB
-But OAE ___ ___ is below that expected for a normal hearing |
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Definition
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Term
| -Some require OAE-NF difference to be ___ dB or higher to be a present/normal in pediatric patients |
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Definition
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Term
Limitations of DPOAE:
-When LF primary tones are used, 2f1-f2 falls in a very ___ frequency range; so OAE will likely be ___ by noise |
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Definition
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Term
-TE OAE are present in ___% of persons with normal hearing sensitivity
-TE OAE are absent in 100% of persons with hearing thresholds > __ dB HL
-25 to 35 dB HL="____________" |
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Definition
| 99; 40; zone of uncertainty |
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Term
TEOAE-Stimlus Parameters:
-Type: ___ or ____
-Clicks have a ___ spectrum; ___ freq response
-Intensity: default level is ___ or ___ dB peSPL; not changed during test
[image] |
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Definition
| clicks or TB; broad; flat; 80 or 86 |
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Term
dB peSPL:
-Peak of click waveform is compared to the peak for a long duration ___ ___ of known intensity -80 dB peSPL is about ___ to ___ dB SPL |
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Definition
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Term
| Consistency of stimulus intensity |
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Definition
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Term
TEOAE Collection Method (Nonlinear Mode):
-Clicks presented in groups of ___
-First 3 clicks are equal in ___ and ___
-4th click is ___ higher in amplitude and ___ degree out of phase
-Responses to each are ___
[image] |
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Definition
| four; phase; amplitude; 3X; 180; summed |
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Term
TEOAE Collection Method (Nonlinear Mode):
-Summing response ___ linear components and ___ nonlinear components
-___ components: follow the stimulus precisely
-___ components: do not change with changes in stimulus intensity
-Collection method reduces linear parts |
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Definition
| reduces; preserves; Linear; Nonlinear |
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Term
TEOAE Collection Method:
-Each group of 4 clicks is put in 1 of __ memory buffers
-Memory __ and memory __ (260 groups per buffer)
-OAE response: consistent from one click to another, so responses in A and B will be ___
-Noise in random, so will ___ be similar between buffers
-For freq analysis, can look at ___ |
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Definition
| 2; A; B; similar; not; latency |
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Term
Frequ. Analysis and Latency in TEOAEs:
-Examining ___ allows for frequency analysis
*4000 Hz=___ msec
*3000 Hz=___ msec
*2000 Hz=___ msec
*1000 Hz=___ msec
*500 Hz=___ msec
-The 1st ___ to ___ msec are eliminated to reduce stimulus artifact, so high-frequency TEOAE are lost |
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Definition
| latency; 5; 7; 9; 12; 15; 2.5 to 3 |
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Term
| There is more noise in the ___ frequencies in a TEOAE |
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Definition
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Term
| TEOAE-data collection and analysis screen. Review this |
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Definition
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Term
How to interpret TEOAE responses:
-Absolute amplitude of TEOAES: ___ dB SPL for infants. ___ dB SPL for children. ___ dB SPL for adults.
-SNR-___ dB or greater
-Try to reduce noise to no greater than ___ dB SPL
-TEOAE response should be ___
-Verify TEOAE reproductivity value > ___% |
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Definition
| 20; 15; 10; 6; 40; repeatable; 90 |
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Term
-Both TEOAE and DPOAE essentially measure the ___ process
-TEOAE may be more effective for ___-frequency screening/assessment
-DPOAE are necessary for ___ frequency testing |
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Definition
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Term
| Describe troubleshooting tips for OAE measurement |
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Definition
| Reduce stimulus intensity level, replace probe and repeat measure, evaluate reliabililty at all test frequencies, verify stimulus intesntiy level |
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Term
| What CPT code is this? DPOA diagnostic test at 3 to 6 frequencies per ear, or TEOAE with analysis by audiologist or physician; must include written report; if conduct DP and TE testing |
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Definition
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Term
| What CPT code is this? comprehensive DPOA diagnositc test at minimum of 12 frequencies per ear with analysis by audiologist or physician |
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Definition
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Term
| What CPT code is this? OAE screening with automated analysis |
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Definition
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