Impedancemetry

Impedance testing helps evaluate the functioning of the middle ear, as well as the mobility of the eardrum and auditory ossicles.

This method does not measure hearing sensitivity. At the same time, it provides the doctor with important data about the state of the auditory system.

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Impedancemetry technique

The process uses a compact, portable impedance meter equipped with a pump (regulates pressure in the ear canal), a loudspeaker and a microphone (records sounds reflected from the eardrum).

During the examination, the patient should not speak, chew or move. Also, before the procedure, it is important to make sure that the ear canal is free of wax plugs (if there are any, they are first cleaned).

There are 3 types of impedance measurements - tympanometry, acoustic reflexometry and the study of the function of the auditory tube.

Impedancemetry technique
Tympanometry

Tympanometry is used to assess the condition of the middle ear. This happens by measuring its response to sound and changes in pressure.

During the procedure, a special probe is inserted into the ear canal. It creates small changes in air pressure in the ear and produces sound. The device then measures how this sound wave reflects off the eardrum.

Changes in the reflection of sound allow the doctor to determine whether there is fluid in the middle ear. He also checks how well the eardrum moves and whether there is air or other abnormalities behind it. This information helps diagnose otitis media, tubo-otitis, and eardrum perforations.

Acoustic reflexometry

In the process of acoustic reflexometry, a specialist measures the reflexive contraction of the middle ear muscle in response to sound stimuli. Acoustic reflex analysis allows the doctor to learn more about the functioning of the auditory nerve. The procedure also helps diagnose various hearing disorders - for example, acoustic neuromas.

Examination of the function of the auditory tube

This technique is aimed at assessing the functioning of the auditory tube. During the process, the specialist asks the patient to perform swallowing movements or puff out his cheeks.

In this case, the pressure in the ear canal is changed using a special device. This allows you to evaluate how well the eustachian tube opens and closes.

Indications for impedance testing

Impedansometry is prescribed if the presence of serous or purulent otitis is suspected. Additional indications:

  • Neuritis of the facial nerve
  • Chronic problems with the eustachian tube
  • Chronic diseases of the nasopharynx
  • Hearing impairment after head injury
  • Congenital or acquired anomalies of the eardrum
  • Persistent ringing in the ears
  • Unspecified headaches

Diagnosis should also be carried out by people who often have to ask their interlocutor again and increase the sound volume on the TV. Impedance testing is also prescribed when selecting a hearing aid - in this case it helps to determine the degree of sensorineural hearing loss.


Preparation for research

No special preparation is required to perform impedance measurements. Typically, the study is carried out in a clinic, in the office of an ENT specialist.

You should have a medical card, a referral from a doctor and the results of previous tests with you.

Contraindications

Impedance testing is not prescribed against the background of active inflammation of the eardrum. Additional contraindications:

  • Pus discharge from the ear canal
  • Acute pain in the ear
  • Presence of foreign objects in the ear cavity
  • Presence of sulfur plugs
  • Recent ear surgery

Also, the procedure is not prescribed for children under 7 months.

How is an appointment with an otolaryngologist at K+31?

During the initial appointment, the doctor questions the patient in detail about complaints, clarifies the history of the disease, and lifestyle. Next, a thorough visual examination of the nose, pharynx, ear, and larynx is carried out. Special tests are prescribed to assess the acuity of hearing and smell.

Polysinusotomy at the K+31 clinic

At the K+31 clinic, impedance measurements are carried out using high-tech equipment from global manufacturers (Karl Storz, Olympus, Siemens, Toshiba, Bausch & Lomb, Technolas, Zeiss, Topcon).

The clinic’s doctors have in-depth knowledge and experience in diagnosing and treating various pathological conditions. The priorities of our center are the convenience and peace of mind of our patients. Therefore, all procedures are carried out in the most comfortable conditions.

Polysinusotomy at the K+31 clinic

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Spiranskaya Olga Aleksandrovna
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Irina Aleksandrovna is a wonderful doctor, a true professional! Thank you very much! My daughter has grade 3 adenoid hypertrophy, only 10% were open. It was hard to see her tears and hear: "Mom, I want to breathe through my nose...". Some people dreamed of a doll, a car, etc., but my daughter dreamed of breathing through her nose, but she couldn't. Thanks to the correct treatment, the adenoids significantly decreased in 4 months and my daughter began to breathe freely through her nose! In addition, my daughter was very afraid of doctors and each visit was a test for us, but Irina Aleksandrovna found an approach to her and our meetings were always easy. Thank you very much again! We are very glad that we got to such a doctor! This is your calling!
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Good afternoon! I would like to express my gratitude to Maria Pavlovna Portnyagina. A competent doctor, an impeccable appointment, an examination was conducted, an ultrasound was immediately agreed upon, a full examination and a set of measures to identify the problem were conducted. Thanks to Maria Pavlovna's appointment, we found out what was going on. I left with an understanding of my health condition and exhaled after the examinations, this rarely happens when you think - this is a doctor, it was not in vain that I came to her. I ask the management to note according to the procedures and policies of the Clinic. I left the appointment with a feeling that you were heard, the problem was considered, the most valuable thing is quickly, efficiently, and not indifferently. That very case when you think - it was not in vain that I went to the doctor. Everything is clear, precise, competent. Time is always very precious, you can spend a lot of time and leave with nothing. Whether you were or were not at the doctor, with the same questions, fears, uncertainty. The best ENT doctor in my life! Maria Pavlovna - thank you. Sincerely, Elena
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After the injury, I started having serious hearing problems. I didn't go to the doctor right away and let the disease get worse. I made an appointment with audiologist-otorhinolaryngologist M.P. Portnyagina. The doctor is experienced, responsive, with a lot of work experience. She identified my problem from the first minutes of the appointment and was generally very pleasant to talk to. The doctor showed me all possible hearing aid options - the consultation was clear and understandable. Thank you for the opportunity to be observed by such competent specialists.
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