Better study guide

What is Atresia?

A congenital malformation characterized by the absence or complete closure of the external auditory canal.

What is Otitis Media?

This condition involves an inflammation or infection of the middle ear space.

What are the symptoms of Otitis Media?

Clinical presentations include ear pain (otalgia), pulling at the ears, fever, irritability, fluid drainage, and temporary hearing loss.

What type of hearing loss and test results are associated with Otitis Media?

This pathology typically results in a conductive configuration and a Type B (flat) tympanogram.

What is Otosclerosis?

This disorder consists of abnormal bone growth around the stapes footplate that prevents it from vibrating freely.

What are the symptoms of Otosclerosis?

Clinical signs involve a gradual, progressive configuration of loss and phantom ringing sounds.

What type of hearing loss and test results are associated with Otosclerosis?

This condition produces a conductive deficit characterized by Carhart's notch (a bone-conduction dip at 2000 Hz) and a Type As (shallow) tympanogram.

What is a Cholesteatoma?

This growth is a non-cancerous skin cyst that develops within the middle ear space behind the tympanic membrane.

What are the symptoms of a Cholesteatoma?

Clinical signs consist of foul-smelling ear drainage, ear pressure, localized pain, dizziness, and a progressive drop in thresholds.

What type of hearing loss and test results are associated with a Cholesteatoma?

This pathology leads to a conductive drop (which can become mixed if it erodes the inner ear) showing a significant air-bone gap.

What is Ossicular Disarticulation?

This trauma involves a physical break or separation in the middle ear ossicular chain.

What type of hearing loss and test results are associated with Ossicular Disarticulation?

This structural damage produces a severe conductive deficit and a Type Ad (highly compliant/deep) tympanogram.

What is BPPV (Benign Paroxysmal Positional Vertigo)?

This peripheral vestibular disorder causes brief, intense episodes of spinning sensations triggered by specific gravitational head changes.

What structures are involved in BPPV?

Pathophysiology is located within the semicircular canals (most commonly the posterior canal) and the utricle (where the otoconia crystals originate).

What is Meniere’s disease?

This inner ear disorder is caused by an abnormal accumulation of endolymph fluid.

What are the symptoms of Meniere’s disease?

Clinical features present as a classic tetrad of episodic spinning, fluctuating low-frequency drops, roaring phantom noises, and localized aural fullness.

What are the diagnostic test results associated with Meniere's disease?

Threshold evaluations reveal a fluctuating low-frequency sensorineural configuration, while Electrocochleography (ECochG) shows an elevated SP/AP ratio.

What is Hyperacusis, and what are its symptoms?

This debilitating condition manifests as an abnormal intolerance to ordinary environmental sounds, triggering physical discomfort, pain, and anxiety.

What is Tinnitus, and what are its symptoms?

This symptom is the perception of phantom sounds in the ears or head, presenting as ringing, buzzing, roaring, or hissing when no external source is present.

What are the possible test results associated with Tinnitus?

Clinical diagnostics reveal specific pitch and loudness matches, minimum masking levels, and frequently an underlying high-frequency sensorineural configuration.

What is Phonophobia?

This psychological reaction is a persistent, irrational fear of sound or loud noises, typically driven by anxiety.

What is Misophonia?

This neurobehavioral condition involves specific soft trigger sounds (like chewing or breathing) evoking an immediate, intense emotional reaction such as anger or disgust.

What is Conductive Hearing Loss?

Pathologies are located in the outer or middle ear; air thresholds are elevated, while bone thresholds remain normal, creating an air-bone gap.

What is Sensorineural Hearing Loss?

Pathologies are located in the inner ear or auditory nerve; air and bone thresholds are equally elevated, leaving no air-bone gap.

What is Mixed Hearing Loss?

Pathologies coexist in both areas; both air and bone thresholds are elevated, but air is significantly worse, leaving an air-bone gap.

How is otitis media treated?

Standard management includes watchful waiting, antibiotic courses, or the surgical insertion of pressure equalization (PE) tubes.

Is middle ear effusion always indicative of an ear infection?

No, fluid can remain for months after a medical issue clears or accumulate due to eustachian tube dysfunction without any active pathogens present.

What are the clinical signs of nonorganic or functional hearing loss?

Key indicators include a discrepancy between the PTA and SRT (where speech metrics are significantly better), inconsistent thresholds across trials, and a lack of expected shadow curves.

How should a clinician handle a patient suspected of malingering during testing?

Best practice is to avoid confrontation, re-instruct using blame-shifting techniques (such as blaming the equipment), and utilize objective testing methods.

What would be risk factors for an exaggerated hearing loss?

Common triggers include financial motivation (compensation claims, lawsuits), underlying psychological stress, or a desire to avoid specific responsibilities.

What is the stenger effect?

This psychoacoustic principle states that if a tone is presented to both ears simultaneously, the brain only perceives it in the ear where it is delivered at a higher sensation level.

How is the stenger test performed to detect unilateral nonorganic hearing loss?

Tones are presented 10 dB above threshold in the better ear and 10 dB below the admitted threshold in the worse ear; individuals attempting to deceive will hear it in the worse side, refuse to respond, and trigger a positive sign.

How do we manage kids with nonorganic hearing loss?

Management requires providing an "honorable exit" via gentle re-instruction, relying on objective testing (OAEs/ABRs), and discussing findings privately with parents.

What are the congenital malformations of the ear?

Structural anomalies include anotia (absent pinna), microtia (small pinna), atresia (closed canal), and stenosis (narrow canal).

How are children affected by undiagnosed hearing loss?

Consequences include significant delays in speech and language development, poor academic performance, and social-emotional difficulties.

What is the OSHA noise standard rule regarding exposure time and intensity?

The regulatory limit is 85 dB for 8 hours; for every 5 dB increase, the allowable duration is cut in half (e.g., 90 dB for 4 hours).

What does OSHA stand for and what do they do?

This federal regulatory agency enforces workplace safety regulations to prevent injuries and hazardous exposures.

What would be an audiologist’s specialty if their job involves measuring noise levels and determining a plan to prevent and monitor noise induced hearing loss?

This professional path is known as Industrial Audiometry (or Occupational Audiology).

Treatment for tinnitus

Protocols include tinnitus retraining therapy (TRT), acoustic maskers, cognitive behavioral therapy (CBT), and avoiding dietary triggers.

What is Subjective Tinnitus?

The perceived sound is audible only to the individual due to sensorineural or neurological changes.

What is Objective Tinnitus?

The perceived sound can be heard by an examiner using a stethoscope, usually caused by vascular anomalies or mechanical muscle spasms.

What three systems do humans use to maintain their balance?

These networks comprise the inner ear balance organs, the eyes, and the sensory receptors within muscles and joints.

What is VNG? What can it determine?

This diagnostic battery tracks involuntary eye movements to isolate whether a balance disorder is peripheral (inner ear) or central (neurological) in origin.

What is rotational chair testing?

This diagnostic procedure rotates an individual in a computerized chair to measure the vestibulo-ocular reflex and evaluate bilateral weaknesses.

What is dynamic posturography testing?

This diagnostic tool uses a moving platform and visual surround to isolate and assess how well an individual utilizes the three primary sensory networks.

How is BPPV treated?

Resolution is achieved mechanically using canalith repositioning maneuvers (such as the Epley maneuver) to guide free-floating crystals out of the semicircular canals.