Audiometry: Nursing Guide
Pure-tone audiometry maps how softly a person can hear across frequencies — helping distinguish conductive from sensorineural patterns when paired with history, otoscopy, and tympanometry. Nurses protect test validity with a quiet environment, clear ear canals, accurate symptom timing, and urgent escalation when sudden unilateral hearing loss may be present.
Contents
Quick Facts
Key Takeaway
Audiometry is only as trustworthy as the conditions around it.
Procedure Safety Checklist
Pre-procedure safety checks — confirm each item before the patient leaves the ward or clinic.
Correct patient, order, and laterality of symptoms
Onset timing (especially sudden unilateral loss within 72 hours)
Otoscopy for cerumen, drainage, perforation, or foreign body
Recent URI, noise exposure, ototoxic medicines, or head trauma
Tinnitus, vertigo, ear pain, or facial weakness
Ability to cooperate and follow instructions in the booth
Hearing aids removed; comfortable seating communicated
Interpreter or communication needs documented
Not usually required — support anxiety and communication needs instead
What is Audiometry?
Audiometry is a hearing test that measures how softly tones can be heard at selected frequencies, usually with headphones for air conduction and sometimes with a bone-conduction oscillator placed on the mastoid. Results are plotted on an audiogram (decibels hearing level versus frequency). Speech audiometry may be added in the same visit to assess word recognition at conversational levels.
Overview
Nurses encounter audiometry in outpatient audiology suites, occupational health screening, ENT clinics, schools, and pre-operative assessments. Per the National Institute on Deafness and Other Communication Disorders (NIDCD), hearing tests help determine whether a person has hearing loss, how severe it is, and what type it may be. Nurses coordinate referrals, prepare patients, reinforce teaching, and flag results that need urgent specialty review.
Unlike a single bedside whisper test, audiometry quantifies thresholds across frequencies and compares air conduction with bone conduction when performed. A conductive pattern often shows poorer air thresholds with relatively better bone thresholds (air-bone gap), while sensorineural loss typically reduces air and bone thresholds together. Nurses should not label the type of loss alone — but should recognize patterns that warrant ENT/audiology follow-up and ensure the test was performed under valid conditions.
Before audiometry, confirm symptom onset and laterality, inspect the ear canal when within scope, and arrange cerumen management if occlusion is present. After testing, escalate sudden unilateral hearing loss, new vertigo, facial weakness, or rapidly worsening word understanding according to facility policy — do not assume mild thresholds on one visit exclude urgent pathology.
Quiet-Room Validity and Sudden Hearing Loss Safety
Valid audiometry requires a quiet environment, a clear ear canal, and accurate symptom timing. Sudden unilateral sensorineural hearing loss is a time-sensitive concern in many ENT pathways — nurses must not treat abnormal thresholds as routine when onset is rapid or neurologic signs appear. Corticosteroid therapy for sudden sensorineural hearing loss is most effective within 72 hours of onset; nurses must facilitate same-day ENT or audiology review when SSNHL criteria are met.
- Sudden painless unilateral hearing loss with unclear onset time
- New vertigo, facial weakness, or severe headache with asymmetric loss
- Invalid test (cerumen occlusion, booth noise, poor cooperation) driving device or clearance decisions
- Occupational threshold shift without hearing-protection review
Document: onset time, canal status, booth validity, results communicated, and escalation calls.
What Audiometry Can and Cannot Tell You
This test can help identify:
- Degree of hearing loss across frequencies when testing conditions are valid
- Conductive versus sensorineural patterns when air and bone conduction are compared
- Baseline and follow-up thresholds for noise-exposed workers or progressive loss
- Functional word-recognition problems when speech audiometry is included
This test cannot:
- Diagnose specific etiology (otosclerosis, acoustic neuroma, presbycusis) without further evaluation
- Replace otoscopy, tympanometry, or imaging when retrocochlear disease is suspected
- Detect all central auditory processing disorders without specialized testing
- Rule out sudden sensorineural hearing loss when onset is unclear — history drives urgency
Pre-test Checks Before Audiometry
Verify
Clarify before proceeding when:
- Onset of sudden unilateral loss is unclear or within time-sensitive treatment windows
- Active purulent otitis, trauma, or foreign body is suspected
- Cerumen completely occludes the canal and cannot be cleared safely
- Patient cannot cooperate and pediatric/adapted protocol is not arranged
- Waiting-area or booth noise exceeds institutional standards
- Order conflicts with acute vertigo or facial weakness needing medical review first
- Prior audiogram strongly conflicts with current symptoms — repeat validity check
Reading Audiograms With Signs and History
Integrate the audiogram with otoscopy, tympanometry, symptom onset, occupational noise history, and neurologic screening. One visit does not define lifelong hearing — trends and validity matter.
| Pattern | May suggest | Nursing focus |
|---|---|---|
| Air-bone gap | Conductive component (cerumen, effusion, otosclerosis) | ENT review; may improve after middle-ear treatment |
| Air and bone equally elevated | Sensorineural loss | Hearing protection, assistive devices, medical causes |
| Asymmetric word recognition | Retrocochlear or central concern | Urgent communication per pathway |
| Normal thresholds, valid test | No measurable loss today | Teach noise protection; continue symptoms surveillance |
Booth Prep, Ear Canal, and Valid Results at the Bedside
| Bedside point | Nursing note |
|---|---|
| Cerumen first | Conductive loss may resolve after clearance — retest when indicated |
| Sudden loss clock | Document exact onset — drives ENT urgency |
| Booth noise | Invalid thresholds should not clear workers or cancel aids |
| Face the patient | Use clear lip-line-of-sight when teaching post-test |
| NCLEX trap | Normal whisper test does not replace formal audiometry when loss is suspected |
| Evaluate outcomes | Repeat word recognition after treatment — did functional hearing improve? |
Audiometry in Outpatient and Ward Referral Pathways
Diagnostic safety badge: Routine diagnostic test — standard identification, preparation, and result-follow-up checks still apply; sudden hearing loss upgrades to urgent pathway.
Check-before-test protocol
- Identity + order + laterality
- Onset timing and red-flag symptoms
- Canal readiness and hearing-aid removal
- Noise exposure and ototoxic medicine review
- Booth validity and communication plan after results
Critical teach-back questions
- “Can you tell me when you first noticed the hearing change?”
- “Which symptoms should you report right away — vertigo, facial weakness, or sudden worsening?”
- “How will you protect your hearing from loud noise at work and home?”
Care coordination: primary prescriber, audiology, ENT, occupational health, and speech-language services when indicated.
Audiometry Quick Clinical Checklist
- Was symptom onset time documented before testing?
- Was the canal clear enough for valid air-conduction thresholds?
- Do air and bone results support conductive, sensorineural, or mixed pattern?
- Does sudden unilateral loss need urgent ENT escalation today?
- Did word recognition or symptoms worsen after the test — requiring re-evaluation?
Why Audiometry is Ordered
Audiometry is ordered when clinicians need objective measurement of hearing sensitivity rather than subjective report alone.
| Clinical Indication | What the Test Answers | Nursing Rationale |
|---|---|---|
| Suspected or confirmed hearing loss | How much hearing is reduced and at which frequencies? | Guides communication plans, hearing protection, assistive devices, and referral to ENT or audiology for treatable causes such as conductive hearing loss. |
| Tinnitus or perceived hearing change | Is there measurable threshold shift supporting reported symptoms? | Pairs with history of tinnitus and may prompt imaging or medical review when asymmetric or sudden. |
| Occupational or noise-exposure surveillance | Has noise exposure caused threshold shift compared with baseline? | Supports workplace hearing conservation per public health guidance/NIOSH prevention guidance; baseline and annual comparisons matter more than one isolated value. |
| Pre-operative or communication-risk assessment | Will the patient hear instructions, alarms, and postoperative teaching? | Informs consent discussions, interpreter needs, and fall-risk communication when hearing loss is uncorrected. |
Contraindications and Precautions
There is no absolute contraindication to standard audiometry, but the test should be deferred or modified when the ear canal cannot be assessed, acute otalgia or drainage requires medical review first, or the environment cannot meet quiet-booth standards.
- Sudden unilateral hearing loss — many pathways treat this as time-sensitive; do not rely on routine outpatient timing alone.
- Cerumen impaction or active otitis — thresholds may improve after treatment; testing through a blocked canal can underestimate true conductive capacity.
- Significant booth noise or patient inability to respond — invalid thresholds should be repeated under proper conditions before major decisions.
- Recent loud noise exposure — may cause temporary threshold shift; note timing per occupational health protocols.
- Ototoxic medicines (selected aminoglycosides, cisplatin, high-dose loop diuretics, some chemotherapy) — document exposure when interpreting results.
- Uncorrected cognitive, language, or developmental barriers — use appropriate pediatric or adapted protocols with audiology.
- Sudden sensorineural hearing loss (often defined as rapid onset over hours to days) — escalate to responsible clinician/ENT pathway according to facility policy.
- New facial weakness, severe vertigo, or sudden painless unilateral loss with neurologic symptoms — urgent specialist review.
- Purulent drainage, severe otalgia, or trauma — evaluate for middle ear infection or injury before attributing loss to chronic sensorineural causes.
Patient Preparation
Preparation focuses on a quiet test environment, canal readiness, symptom documentation, and patient coaching for reliable responses.
Pre-test checksReview ototoxic medicines and recent high-dose analgesic or diuretic courses with the prescriber when results show new sensorineural loss. Do not stop prescribed therapy without orders — document medicines taken in the last 48–72 hours.
Performance — nursing procedure guide
This page is a Tests & Diagnostics guide for Audiometry. It emphasizes why the test is ordered, how to interpret results, when to escalate, and preparation factors that affect validity — not step-by-step performance technique (those live under Nursing Procedures when available).
Step-by-step technique, supplies, infection prevention, and immediate post-procedure monitoring for this test are covered in:
Use the Patient preparation, Results and interpretation, and Nursing responsibilities sections on this page for order verification, pre-analytic checks, result follow-up, critical-value escalation, and documentation.
Result follow-up at a glance
Nursing workflow on this page — from order to safe action on results:
Results and Interpretation
Audiometry results are reported as hearing threshold levels (commonly decibels hearing level, dB HL) at each tested frequency and plotted on an audiogram. Severity grading (mild, moderate, severe) uses average threshold calculations — definitions vary by age and guideline (international health authorities uses dB HL averages for adults). Always use the reporting audiologist’s interpretation and local policy.
Reference ranges, critical values, and protocols may vary by laboratory, institution, patient population, and testing method. Always follow local policy and the reporting laboratory’s reference range.
| Result | Range / Finding | Clinical Meaning | Nursing Action |
|---|---|---|---|
| No acute critical finding / as expected for indication | Thresholds within age-appropriate norms on the audiogram | No significant measurable hearing loss for tested frequencies under valid test conditions | Continue routine surveillance if noise-exposed; reinforce hearing protection |
| Equivocal / indeterminate finding | Borderline thresholds or mild shift from prior baseline | May represent early noise-induced loss or need repeat testing after quiet period | Compare with prior occupational or clinical audiograms; counsel on noise protection |
| Abnormal finding — clinically significant | Elevated thresholds (worse hearing) — conductive, sensorineural, or mixed pattern | Conductive pattern: air-bone gap; may improve with middle-ear treatment. Sensorineural pattern: air and bone thresholds similarly elevated — may indicate sensorineural hearing loss. | Communicate to prescriber/ENT/audiology; arrange tympanometry or imaging per pathway; support hearing-assist referrals |
| Not applicable | Not applicable — audiometry measures hearing sensitivity, not “low” numeric lab values | Not applicable for threshold reporting | Interpret using audiogram pattern and clinical context |
Urgent Findings and Escalation
Audiometry does not use laboratory critical values. Urgent nursing action depends on symptom timing and neurologic signs — especially sudden unilateral hearing loss.
| Critical Finding | Threshold / Value | Immediate Action |
|---|---|---|
| Sudden unilateral sensorineural hearing loss | Rapid onset over hours to days with significant threshold shift | Escalate to responsible clinician/ENT according to facility policy; document onset time — many guidelines emphasize early treatment windows |
| New facial weakness or severe vertigo with hearing loss | Audiometric asymmetry plus cranial nerve or vestibular signs | Urgent medical review; consider stroke or retrocochlear pathology per prescriber |
| Invalid test with pending management decisions | Cerumen occlusion, booth noise, or non-cooperation producing unreliable thresholds | Do not base hearing-aid, surgical, or occupational clearance on invalid data — repeat after canal clearance or proper conditions |
Stop routine scheduling and escalate according to facility policy when sudden unilateral hearing loss, new neurologic signs, or rapidly worsening word recognition occurs — even if same-day audiometry is incomplete.
Factors Affecting Results
Thresholds can be affected by test technique, ear canal status, and recent exposures.
- Cerumen impaction mimicking conductive loss until removed
- Collateral noise in a non-sound-treated room lowering apparent thresholds
- Temporary threshold shift after loud concert or workplace noise
- Patient raising hand when uncertain — thresholds appear better than true sensitivity
- Masking errors or crossover between ears in asymmetric loss
- Testing only air conduction when bone conduction would reveal sensorineural component
- Middle ear effusion or perforation altering conductive results
- Uncalibrated equipment or incorrect headphone placement
- Age-related norms misapplied to pediatric patients without pediatric norms
Audiometry does not diagnose the underlying cause of loss, does not replace imaging when retrocochlear disease is suspected, and may not detect central auditory processing disorders. A normal audiogram does not exclude auditory neuropathy spectrum disorder without specialized testing. Turnaround and screening rules vary by institution; follow local institutional policy for universal screening cut-offs in all age groups.
Nursing Responsibilities
Nursing care centers on valid test conditions, accurate symptom documentation, patient teaching, and timely escalation of sudden or asymmetric loss.
Before the TestDocumentation
Clear documentation supports occupational, surgical, and rehabilitation planning.
“Audiometry referral completed 1030. Patient reports sudden left hearing loss since yesterday 0600 with tinnitus; right ear unchanged. Cerumen removed in clinic before test. Hearing aids removed. Tolerated pure-tone and bone-conduction testing in sound booth; good cooperation. Audiologist noted air-bone gap left mid-frequencies; formal report pending. Prescriber notified of onset time per sudden hearing-loss protocol. Patient taught to report new vertigo, facial droop, or worsening word understanding.”
- Indication, laterality, and symptom onset date/time
- Canal status, cerumen management, and hearing-aid removal
- Test type (air, bone, speech) and cooperation/validity notes
- Patient tolerance and post-test symptoms
- Urgent communication and read-back when required by policy
- Teaching on noise protection and return precautions
Patient and Family Education
Use plain language; emphasize that the test measures the softest sounds heard, not intelligence or attention.
Audiometry NCLEX practice questions
Practice NCLEX-style clinical judgment focused on Audiometry safety and nursing judgment. Use the case tabs (orders, results, assessment, nursing notes), then answer eight Next Gen–style items (including an ordered workflow step) and evaluate outcomes with the answer key.
Select a tab to view orders, results, assessment, and nursing note details for this case.
- Order: Comprehensive audiometry — air and bone conduction; speech discrimination if indicated
- Indication: Progressive left hearing loss and tinnitus × 3 weeks; occupational noise history
- Timing: Scheduled outpatient; patient reports possible sudden dip 48 hours ago in left ear
- Related orders: Tympanometry same visit; ENT referral pending results
- Result: Left ear air-bone gap 30–40 dB mid-frequencies; right ear thresholds within age norms
- Trend / prior value: Prior screening 2 years ago reportedly normal; word recognition left ear 68% today vs 92% right
- Pending tests: Formal audiologist report and ENT appointment availability
- Vital signs: BP 128/76, HR 82/min, RR 16, SpO₂ 98% on room air, T 36.8 °C
- Symptoms: Left ear fullness, intermittent tinnitus, no vertigo today; denies ear pain
- Focused assessment: External canal clear; tympanic membrane visualized as intact; speaks loudly when unaware
- Preparation notes: Hearing aid in left ear — removed before test; patient drank coffee in waiting area near booth
- Collection events: Audiologist noted variable responses at 4000 Hz; booth door opened once during left ear testing
- Teaching gaps / safety concerns: Possible invalid left thresholds; patient unsure of exact onset of sudden change; word recognition asymmetry
Answer key & rationale
Frequently Asked Questions
FAQ
What is the difference between air and bone conduction audiometry?
Air-conduction testing uses headphones and evaluates the entire auditory pathway including the outer and middle ear. Bone-conduction testing uses a mastoid oscillator and assesses inner-ear sensitivity. Comparing them helps distinguish conductive from sensorineural patterns when both are performed under valid conditions.
Does audiometry diagnose the cause of hearing loss?
No. Audiometry quantifies hearing sensitivity and pattern. Diagnosis requires clinical examination, history, and often tympanometry, imaging, or laboratory studies depending on suspected etiology.
When is sudden hearing loss an emergency?
Sudden unilateral sensorineural hearing loss is treated as time-sensitive in many ENT pathways. Corticosteroid therapy is most effective within 72 hours of onset — nurses should document onset time, facilitate same-day ENT or audiology review when criteria are met, and escalate according to facility policy — not wait for routine follow-up alone.
Can cerumen affect audiometry results?
Yes. Wax blocking the canal can mimic conductive hearing loss until removed. Otoscopy and cerumen management before testing improve validity per clinical practice references.
How should nurses prepare patients for audiometry?
Confirm symptom onset, remove hearing aids, ensure the canal is clear when possible, reduce waiting-area noise, and coach the patient to respond only when tones are heard. Follow local audiology instructions for pediatric or adapted testing.
What related tests are often ordered with audiometry?
Tympanometry evaluates middle-ear pressure and compliance; speech testing assesses word recognition; imaging may be ordered when retrocochlear disease is suspected. Bedside hearing screening may occur before formal audiometry.
Are there universal normal dB thresholds for all ages?
No single universal normal threshold applies across ages and settings. international health authorities and audiology references use averaged dB HL categories for severity, but pediatric norms and institutional protocols differ. Use the reporting audiologist’s interpretation.
References
References
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National Institute on Deafness and Other Communication Disorders. Hearing Tests. NIH.https://www.nidcd.nih.gov/health/hearing-tests
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National Health Service. Hearing tests. NHS.uk.https://www.nhs.uk/tests-and-treatments/hearing-tests/
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World Health Organization. Deafness and hearing loss. WHO Fact Sheet.https://www.who.int/news-room/fact-sheets/detail/deafness-and-hearing-loss
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Centers for Disease Control and Prevention; National Institute for Occupational Safety and Health. Noise and Hearing Loss Prevention. CDC.https://www.cdc.gov/niosh/topics/noise/
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MedlinePlus. Hearing Tests. U.S. National Library of Medicine.https://medlineplus.gov/hearingtests.html
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American Speech-Language-Hearing Association. Hearing Testing. ASHA.https://www.asha.org/public/hearing/hearing-testing/
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National Institute on Deafness and Other Communication Disorders. Noise-Induced Hearing Loss. NIH.https://www.nidcd.nih.gov/health/noise-induced-hearing-loss
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MedlinePlus Medical Encyclopedia. Audiometry. U.S. National Library of Medicine.https://medlineplus.gov/ency/article/003286.htm
Editorial Standards & Medical Review
About the author: Sid A. Abdala Balal, RN, writes evidence-based nursing education focused on diagnostic safety, clinical interpretation, and bedside nursing judgment.
Medical review: This guide is reviewed by Dr. Adam Sayedi, MD, for clinical accuracy, diagnostic safety, and alignment with current standards for Audiometry.
Policies: Medical Review Process · Editorial Policy · Correction Policy