Home » Impedance

Impedance Test in Bangalore

The primary purpose of conducting impedance test is to determine the status of the tympanic membrane and middle ear via tympanometry. Tympanometry allows the audiologist to measure how well the eardrum is vibrating when sound strikes and how well the tiny bones of the ear are functioning to transmit those vibrations to the organ of hearing. It also measures the pressure in the space behind the eardrum that contains those bones. For tympanometry, a soft rubbery tip is inserted in the ear and the pressure in the ear canal is changed, resulting in a feeling like going up in an airplane.

Abnormal findings on this test may indicate a conductive loss requiring a referral for medical evaluation. An example of a hearing problem with abnormal tympanometry would be a patient with fluid in the ear (otitis media).

Another part of the impedance test is acoustic reflex measurement. Acoustic reflex measurement allows the audiologist to further examine the integrity of the middle ear system. For this test, very brief, somewhat loud tones are presented to each ear, to determine whether an acoustic reflex is present or absent, without requiring any response from the patient. In a normal-hearing ear, the stapedius muscle in the middle ear contracts involuntarily in response to loud sounds presented at levels of about 70-100 dB (decibels).

Acoustic immittance is a way of measuring the energy or air pressure flow, which involves the ear canal, ossicular chain, cochlea, eardrum, tensor tympani, stapedius muscle, CNs VII CNs VIII, and the brainstem. The reciprocal of this is acoustic impedance. In earlier period, these measurements were performed in impedance rather than immittance measures. Therefore, the term impedance audiometry is sometimes used instead of impedance test.

We at Aadithya Hearing Solution have world-class infrastructure and testing instruments and hence regarded as one of the best centres for conducting impedance test in Bangalore. Our centres are located at Rajaji Nagar, Bangalore and Malleshwaram, Bangalore.

Rajaji Nagar Branch     # 72/A, Chamundi Arcade,
29th Cross, 2nd block,
Rajajinagar Bangalore - 10
Malleshwaram Branch    # 17, 4th Main Road,
7th Cross, Club Road,
Malleshwaram, Bangalore - 03