Tympanometry (impedance testing)
CPT4 code
Name of the Procedure:
Tympanometry (Impedance Testing)
Summary
Tympanometry is a quick and painless test that evaluates the condition of the middle ear and the mobility of the eardrum (tympanic membrane). It helps diagnose issues that may cause hearing problems.
Purpose
Tympanometry is used to assess problems related to the middle ear such as fluid buildup, eardrum perforations, or Eustachian tube dysfunction. The goal is to identify and diagnose these issues to guide appropriate treatment.
Indications
- Symptoms of hearing loss
- Persistent ear infections
- Fluid in the ear (otitis media with effusion)
- Eustachian tube dysfunction
- Suspected eardrum perforation
Preparation
- No special preparation is typically needed.
- Patients should inform their healthcare provider of any ear pain or active ear infections.
- Removal of significant earwax may be necessary before the procedure.
Procedure Description
- The patient sits comfortably.
- A probe is placed in the ear canal, which creates variations in air pressure.
- The probe emits a tone, and the device measures the eardrum’s responses to these pressure changes.
- The results are recorded on a tympanogram for analysis by a healthcare provider.
No anesthesia or sedation is required as the test is non-invasive and painless.
Duration
The procedure typically takes about 5 to 10 minutes per ear.
Setting
Tympanometry is typically performed in a healthcare provider’s office or an audiology clinic.
Personnel
The test is usually conducted by an audiologist, an ENT (ear, nose, and throat) specialist, or a trained healthcare provider.
Risks and Complications
- Common: Minor discomfort due to pressure changes.
- Rare: Temporary changes in hearing or slight dizziness immediately following the test.
Benefits
- Accurate diagnosis of middle ear problems.
- Quick and painless examination.
- Helps in determining appropriate treatment options.
Recovery
- No recovery time is needed.
- Patients can resume normal activities immediately after the test.
- Follow-up appointments may be scheduled depending on the test results.
Alternatives
- Audiometry: Assesses overall hearing ability but does not provide specific information about middle ear function.
- Otoscopy: Visual examination of the ear canal and eardrum but less detailed regarding middle ear conditions.
Patient Experience
During the procedure, patients might feel mild pressure changes in the ear, similar to what is experienced during altitude changes in an airplane. There is generally no pain involved, and any discomfort is minimal and temporary.