Indications and Procedure of Pure Tone Audiometry

Clinical Indications for Pure Tone Audiometry

Pure Tone Audiometry (PTA) is a fundamental audiological test used to assess hearing sensitivity. It is crucial in diagnosing hearing impairments and monitoring auditory function over time.

Indications for Pure Tone Audiometry

• Diagnosis of sensorineural, conductive, and mixed hearing loss
• Assessment of occupational hearing loss
• Preoperative and postoperative hearing evaluation
• Monitoring ototoxic medication effects
• Evaluation of patients with tinnitus or vertigo

Procedure of Pure Tone Audiometry

The procedure involves presenting pure-tone signals via headphones to determine the patient’s hearing thresholds at various frequencies.

Step-by-Step Process

1. Preparation: The patient is seated in a soundproof room.
2. Instructions: The audiologist explains the test procedure.
3. Threshold Testing: The patient responds when they hear tones at different frequencies.
4. Recording Results: Thresholds are plotted on an audiogram.
5. Interpretation: The audiologist assesses hearing ability and diagnoses any abnormalities.

Importance and Clinical Application

PTA provides valuable insights into the type and severity of hearing loss, aiding in treatment planning and rehabilitation strategies.