Term
Purpose of Audiometric Testing:
-To ___ hearing
–To identify __TS before it becomes __TS
–To identify ___ NIHL before it becomes ___ |
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Definition
| monitor; T; P; progressive; handicapping |
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Term
| Wh o is Qualified to Monitor Hearing According to OSHA? |
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Definition
| Physician, otolaryngologist, licensed audiologists, and technicians who report to ORL MD or physician |
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Term
| What is testing for audiometric monitoring? |
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Definition
| Air-conduction thresholds of 500, 1000, 2000, 3000, 4000, and 6000 Hz. OSHA recommends testing 8000 Hz but is not required. Most use supra-aural headphones. Required annually. |
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Term
| Compare final audiogram with supra-aural phones to ___ audiogram |
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Definition
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Term
| A change in either ear (relative to baseline) of 10 dB or more in the average of AC thresholds at 2000, 3000, & 4000 Hz |
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Definition
| Standard Threshold Shift (STS) |
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Term
| initial audiogram or appropriately newly-identified baseline data |
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Definition
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Term
-If annual audiogram suggests an STS, reschedule for a retest within ___ days to determine if STS persists. ___ retest is recommended.
-When determining if STS occurred, may use ___ correction values (but not required) |
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Definition
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Term
| a change in either ear of 15 dB or more at any frequency from 500-6000 Hz on annual audiogram and again on retest within 30 days |
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Definition
| NIOSH Significant Threshold Shift |
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Term
| NIOSH wants to ___ NIHL (not just conserve hearing), this is more ___ than OSHA STS |
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Definition
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Term
| Wh en Is Audiometric Monitoring Needed According to OSHA ? |
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Definition
| for workers exposed to 85 dBA or higher TWA |
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Term
| Baseline should be done within __ months of noise exposure |
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Definition
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Term
| What are the maximum allowable sound levels in test rooms according to OSHA? |
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Definition
| 500Hz=40 dB, 1000Hz=40 dB, 2000 Hz=47 dB, 4000Hz=57 dB and 8000 Hz=62 dB |
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Term
Microprocessor Audiometers:
-___ programmed to present pure tones, record responses, determine threshold.
-can test __-__ at a time with some equipment
-downloads data into ___ & automatically ___ current data to baseline, calculates ___, prepares letters. |
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Definition
| Microchip; 6-8; PC; compares; STS |
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Term
Microprocessor Audiometers - Disadvantages:
-No ___ protocol to present pure tones
-Variability may make it hard to ___ results
-Differences in thresholds could affect group ____ rates
-If equipment experiences a ___ ___, could lose records or damage equipment |
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Definition
| standardized; compare; STS; power surge |
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Term
| Measure baseline audiogram before ___ or after ___ hour quiet period |
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Definition
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Term
-If STS is confirmed, calculate average thresholds at 2000,
3000, & 4000 Hz to see if the average is ___ dB HL or
worse |
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Definition
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Term
-If STS is present in 1 or both ears, revise the ___ in both ears
-The ___ periodic audiogram becomes the baseline audiogram
-Worker with __ baseline revisions due to STS x3 is at greater risk for NIHL |
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Definition
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Term
Baselines are revised when thresholds IMPROVE:
-If average of thresholds at 2,3,& 4 kHz show a ___ dB or more
improvement AND
-Improvements are seen on ___ annual tests, record should be
reviewed by professional supervisor |
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Definition
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Term
When STS is Present:
-inform workers in writing within ___ days of determining STS
-Workers NOT wearing HPDs because of exposures below 90 dBA TWA should be _________________________.
-Workers already wearing HPDs should be ___ (different type if needed) & ___ |
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Definition
| 21; fitted with hearing protection, trained, & required to use HPDs; re-fitted; retrained |
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Term
When STS is Present:
-must refer worker to ___ or ___ if you suspect medical problem or if complete hearing test is needed |
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Definition
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Term
| What are some potential sources of unreliable thresholds? |
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Definition
| Test environment, uncalibrated equipment, test error, and other variables associated with person being tested like motivation |
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Term
| What is another entity interested in hearing conservation? |
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Definition
| National Hearing Conservation Association (NHCA) |
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Term
| What organization published a :Guideline for Baseline Revision" in 2001 and publishes a newsletter call "The Spectrum? |
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Definition
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