What is Impedance Audiometry?
Impedance Audiometry, also known as Tympanometry with Acoustic Reflex Testing, measures how the eardrum responds to changes in air pressure. It helps determine the mobility of the middle-ear system and evaluates whether the eardrum, ossicles, and reflex pathways are functioning properly.
At Adro Hearing Aid Centre, this test is essential for diagnosing conditions such as fluid behind the eardrum, Eustachian tube dysfunction, ossicular stiffness, perforations, and various middle-ear pathologies with high accuracy.
Why Is Impedance Audiometry Important?
- Detects middle-ear infections or fluid build-up
- Evaluates Eustachian tube function
- Confirms perforations or stiffness of the eardrum
- Assesses ossicular chain mobility
- Measures acoustic reflex thresholds
- Supports accurate hearing loss diagnosis
How the Test Is Done at Adro
At Adro, Impedance Audiometry is performed by trained audiologists in a calibrated, sound-controlled environment to ensure precise results.
Step-by-Step Clinic Procedure
Initial Consultation:
- The audiologist reviews your symptoms, ear complaints, and relevant medical history.
Ear Examination:
- A quick otoscopic check is done to ensure the ear canal is free from wax or infection, as these can affect the results.
Probe Placement:
- A soft, airtight probe is gently inserted at the entrance of your ear canal.
Tympanometry Test:
- The device varies air pressure and measures how your eardrum moves in response, producing a tympanogram instantly.
Acoustic Reflex Testing:
- Soft and moderate sounds are played to measure the contraction of the middle-ear muscles.
Result Interpretation:
- Your tympanogram and reflex thresholds are analysed and explained in easy-to-understand terms.
Recommendations:
- Based on the findings, you may be advised on treatment options, ENT referrals, or further hearing tests if required.
Patient Preparation
No major preparation is needed, but the following tips help ensure accurate results:
- Ensure your ears are clean and free from excess wax
- Avoid using earbuds or cotton buds before the test
- Inform the audiologist of ear pain, blocked sensation, or recent infections
- Keep children relaxed and still during the procedure
- Test Duration & Cost
Time : 15–20 minutes
(Additional time may be needed if both PTA and impedance testing are recommended.)
Cost: ₹500 per session
(Includes consultation, testing, and explanation of results)
Frequently Asked Questions
No. The test is completely painless. You may feel slight pressure changes in the ear, but it lasts only a few seconds.
Yes. In fact, it is one of the most important tests for diagnosing middle-ear problems in infants and children.
Often yes. Impedance Audiometry and Pure Tone Audiometry together provide a complete view of middle-ear and hearing function