Name of the Procedure:

Speech Audiometry Threshold, also known as Speech Reception Threshold (SRT) testing.

Summary

Speech audiometry threshold is a hearing test that measures a person's ability to recognize and understand spoken words at different volume levels. It helps determine the quietest speech sounds a person can hear and comprehend.

Purpose

The procedure is primarily used to evaluate hearing loss and speech comprehension ability. It aims to identify the extent of hearing impairment and to guide the appropriate treatment or intervention.

Indications

• Difficulty understanding speech in noisy environments or on the phone
• Frequent need for repetition in conversations
• Complaints of "muffled" hearing or inability to hear certain sounds
• Individuals diagnosed with or suspected of having hearing loss

Preparation

• No special preparation, fasting, or medication adjustments are required.
• Patients may undergo a preliminary otoscopic examination to ensure the ear canal is free from blockages, like earwax.

Procedure Description

1. The patient is seated in a soundproof booth with headphones on.
2. A series of spoken words or sentences are played through the headphones at varying volume levels.
3. The patient is asked to repeat the words they hear.
4. The audiologist adjusts the volume to find the softest level at which the patient can correctly repeat 50% of the words (the speech recognition threshold).
5. The test is conducted for both ears, usually starting with the better-hearing ear.

Typically, no anesthesia or sedation is required as this is a non-invasive and straightforward procedure.

Duration

The procedure usually takes around 30 to 45 minutes.

Setting

Speech audiometry threshold testing is typically performed in an audiology clinic or an outpatient section of a hospital.

Personnel

• Audiologists or hearing specialists conduct the test.
• Occasionally, an assistant or a nurse may help position the patient and operate the equipment.

Risks and Complications

The procedure is very safe with minimal risks. Possible issues could include:

• Discomfort from sitting in a soundproof booth
• Mild anxiety or claustrophobia in sensitive individuals

Benefits

• Accurate diagnosis of the type and severity of hearing loss.
• Tailored treatment plans, including hearing aids or other rehabilitative measures.
• Improved ability to understand speech, leading to enhanced communication and quality of life.

Recovery

• No recovery time is needed as the test is non-invasive.
• Patients can immediately return to their normal activities.
• An audiologist will usually review the results with the patient and discuss potential next steps.

Alternatives

• Pure-tone audiometry: Measures the ability to hear sounds at different pitches and volumes but does not specifically test speech comprehension.
• Otoacoustic emissions (OAE): Evaluates inner ear function and is often used for newborn hearing screening.
• Auditory Brainstem Response (ABR): Assesses the brain's response to sound and is useful in diagnosing hearing loss in infants or individuals who cannot participate in typical hearing tests.

Patient Experience

Patients may find the procedure to be simple and painless. They should expect minimal discomfort and only need to focus on listening and repeating spoken words. Pain management is generally not needed, and any anxiety about the test can be alleviated by discussing concerns with the audiologist beforehand.