Impedance measurements of the ear — what is it and how effective
What impedance measurements of the ear?
Modern medicine successfully treats diseases related to hearing. However, the efficiency of modern methods of treatment depends on how timely the patient went to the hospital. Not to waste sometimes, so the lost time taken as soon as possible to examine the patient and establish the diagnosis, to start treatment. To identify a particular form of ear pathology enables impedance measurements of the ear. As practice shows, this method is widely popular and accurate.
Many do not understand why the impedance measurements of the ear, what is it and how is it performed. The otolaryngologist almost every time you have to explain to the patient about the need for deep examination. This procedure allows to accurately figure out the nature of the pathology, to understand why I began to lose hearing. Also the survey revealed the affected area of the auditory canal.
What impedance measurements of the ear
Impedance audiometry (tympanometry or impedance measurement) is one of the methods of traditional medicine, which allows to perform objective audiological examination of patients, identify pathology of organs of hearing. This technique is used in establishing the ear diseases in children and adult patients.
After the examination the doctor develops a complete picture about the condition of the auditory ossicles, in the case of disease — how they are affected and whether surgery for their prosthetics.
- to understand what pressure is created in the middle ear cavity, if there is liquid and to what extent;
- to form a clear idea of the condition of the ear canal and the cochlea;
- to determine whether the affected areas of the middle ear and the nerves;
- to recognize the different diseases of the tympanic membrane, various kinds of impaired patency of the auditory canal.
On the background diagnosis is made the conclusion about the occurrence of otitis media, the development of the inflammatory process in a particular Department for hearing. Revealed tympanosclerosis, otosclerosis and any other disease.
The principle of such a diagnosis lies in the fact that the acoustic conductivity of the middle ear is measured and recorded by pressure of the air column and parallel sound exposure.
The shift of the acoustic conductivity is measured automatically, determines the resistance of the sound of the middle and external ear. Thanks to this method, it turns out accurately how many there have been deviations from the norm as the strongly decreased hearing or how it was distortion.
Depending on what the pathology indicates the symptomatology of the patient, the different ways of research. So, you can apply:
- experience Valsalva;
- experience Toynbee;
How is the procedure
In the auditory canal of the outer passage, directly to the tympanic membrane, is fed the sound of a certain frequency and pressure. A cavity in which the direction of the sound, needs to be closed, to cover use ear buds that are attached to the probe. The shape and size of the inserts can be different, are selected data elements individually.
The probe is attached to the air pump that allows, if necessary, to change the pressure of the sound stream. Also it is attached to the sound generator, which actually provides the sound.
An additional element was the microphone, which picks up the reflected signal. Directed to the right place the sound wave begins to strain the muscles of the eardrum. Sound pressure from the eardrum is captured by the microphone and in the future, there is recognition.
Otorhinolaryngologists there are the following indications for the need for this survey:
- chronic diseases of the ears;
- otitis, in which the accumulation in the ear canal exudate;
- adhesive otitis;
Conduct the survey also in the following cases:
- when the patient reports persistent noise in the ears;
- when a long time for reasons that are unclear ears;
- when inside the ear the patient feels pressure and pain, ear canal like something bursting or shrinks;
- when sudden hearing loss;
- at the initial stage of acoustic neuroma.
The diagnostic value of the procedure
Initially, it is assumed that the direction of impedance measurements of the ear is not just another test «for show» and highly effective methods of establishing disease.
Failures such testing usually does not. The diagnostic value of this procedure is incredible high.
In a matter of minutes it is possible to identify different degrees of hearing loss, to understand how damaged the cranial nerves, identify pathology of the brain stem.
Features. To be afraid of such diagnosis is not necessary, the procedure is absolutely painless and does not involve further health problems. Accessibility impedance of the ear allows you to assign the survey to different segments of society, the patient’s age also is not important.
If you have any problems with hearing or was suspicious for some pathology, in no case do not self-medicate. The fact that as an educated person you would not be without the necessary medical knowledge and examinations that are often performed thanks to modern equipment, to establish a correct diagnosis will not work.
When it happens that a consultation of the visual inspection is not enough, and it gives you the direction to the impedance measurements of the ear, in any case can not give up. It’s safe to say that this procedure will allow for early detection and accurately diagnose any abnormality.
The doctor will put the correct diagnosis and choose the correct course of treatment. So your illness will be cured and will cease to disturb already at a very early stage of development.