PTA Presentation.pptx a presentation on Pure Tone Audiometry

A presentation on Pure Tone Audiometry

1. Pure Tone Audiometry - An Essential Hearing Test - By: Francis Kwame Aklika 28|06|2024 37 MILITARY HOSPITAL | EAR, NOSE AND THROAT DEPARTMENT | AUDIOLOGY UNIT 1

2. Introduction to Pure Tone Audiometry Pure tone audiometry is a key hearing test used to identify hearing threshold levels of an individual, enabling the determination of the degree, type, and configuration of hearing loss. It is fundamental in audiological evaluations. 37 MILITARY HOSPITAL | EAR, NOSE AND THROAT DEPARTMENT | AUDIOLOGY UNIT 2

3. Objectives of the Presentation Understand the principles of pure tone audiometry. Learn the procedure for conducting the test. Interpret audiometric results effectively. 37 MILITARY HOSPITAL | EAR, NOSE AND THROAT DEPARTMENT | AUDIOLOGY UNIT 3

4. What is Pure Tone Audiometry? Pure tone audiometry is a behavioral test used to measure hearing sensitivity. It involves the use of pure tones of varying frequencies(Hz) and intensities (dB) to establish the quietest sounds a person can hear. 37 MILITARY HOSPITAL | EAR, NOSE AND THROAT DEPARTMENT | AUDIOLOGY UNIT 4

5. Types of Pure Tone Audiometry Air Conduction Audiometry: Assesses the ability to hear sounds through the air. Bone Conduction Audiometry: Tests the ability to hear sounds transmitted through the bones of the skull. 37 MILITARY HOSPITAL | EAR, NOSE AND THROAT DEPARTMENT | AUDIOLOGY UNIT 5

6. Equipment Used Audiometer: Device that produces pure tones at various frequencies and intensities. Transducers: Headphones for air conduction, bone vibrator for bone conduction. Soundproof Booth: Ensures a quiet environment for accurate testing. Response button: This is a tool used by patients to indicate when they hear a tone or sound through the transducers. 37 MILITARY HOSPITAL | EAR, NOSE AND THROAT DEPARTMENT | AUDIOLOGY UNIT 6

7. Preparation for the Test Ensure a quiet testing environment. Calibrate equipment before testing. Provide clear instructions to the patient. For instance; “You will hear a series of beeps, press the button when you hear them.” 37 MILITARY HOSPITAL | EAR, NOSE AND THROAT DEPARTMENT | AUDIOLOGY UNIT 7

8. Air Conduction Testing Procedure Use headphones to present tones at different frequencies (250 Hz to 8,000 Hz). Start at a comfortable hearing level, usually 30 dB HL. Decrease intensity in 10 dB steps until no response, then increase in 5 dB steps to find threshold. Repeat for each ear separately. 37 MILITARY HOSPITAL | EAR, NOSE AND THROAT DEPARTMENT | AUDIOLOGY UNIT 8

9. Bone Conduction Testing Procedure Place bone vibrator on the mastoid bone. Present tones at different frequencies. Follow the same threshold-seeking procedure as air conduction. Mask the non-test ear if necessary to prevent crossover hearing. 37 MILITARY HOSPITAL | EAR, NOSE AND THROAT DEPARTMENT | AUDIOLOGY UNIT 9

10. Interpreting Audiograms The audiogram is a chart that shows the results of a hearing test. This shows how well you hear sounds in terms of frequency (high-pitched sounds versus low-pitched sounds) and intensity, or loudness. 37 MILITARY HOSPITAL | EAR, NOSE AND THROAT DEPARTMENT | AUDIOLOGY UNIT 10

11. Interpreting Audiograms 37 MILITARY HOSPITAL | EAR, NOSE AND THROAT DEPARTMENT | AUDIOLOGY UNIT 11

12. Interpreting Audiograms 37 MILITARY HOSPITAL | EAR, NOSE AND THROAT DEPARTMENT | AUDIOLOGY UNIT 12

13. Types of Hearing Loss Conductive Hearing Loss: Impaired sound transmission in the outer/middle ear. Audiogram shows normal bone conduction, impaired air conduction. Sensorineural Hearing Loss: Damage to inner ear/auditory nerve. Audiogram shows impaired air and bone conduction. Mixed Hearing Loss: Combination of conductive and sensorineural components. 37 MILITARY HOSPITAL | EAR, NOSE AND THROAT DEPARTMENT | AUDIOLOGY UNIT 13

14. Case Study Patient: 45-year-old male with hearing difficulty. Findings: Audiogram shows mild sensorineural hearing loss in both ears. Diagnosis: Sensorineural hearing loss likely due to age-related changes. Recommendations: Consider hearing aids, follow-up in six months. 37 MILITARY HOSPITAL | EAR, NOSE AND THROAT DEPARTMENT | AUDIOLOGY UNIT 14

15. Common Challenges Patient Cooperation = Ensuring accurate responses. Environmental Noise = Using a soundproof booth. Equipment Malfunctions = Regular maintenance and calibration. 37 MILITARY HOSPITAL | EAR, NOSE AND THROAT DEPARTMENT | AUDIOLOGY UNIT 15

16. Clinical Applications Diagnosis: Identifying type and degree of hearing loss. Monitoring: Tracking changes in hearing over time. Hearing Aids: Assessing the need for amplification. 37 MILITARY HOSPITAL | EAR, NOSE AND THROAT DEPARTMENT | AUDIOLOGY UNIT 16

17. Advances in Pure Tone Audiometry Automated Audiometry: Self-administered hearing tests. Tele-Audiometry: Remote hearing assessments. Research Developments: New technologies for more accurate testing. 37 MILITARY HOSPITAL | EAR, NOSE AND THROAT DEPARTMENT | AUDIOLOGY UNIT 17

18. Summary and Conclusion Pure tone audiometry is essential for diagnosing and managing hearing loss. It involves precise testing procedures and careful interpretation of results. Advances in technology continue to improve the accuracy and accessibility of audiometric testing. 37 MILITARY HOSPITAL | EAR, NOSE AND THROAT DEPARTMENT | AUDIOLOGY UNIT 18

19. THANK YOU FOR AUDIENCE Questions? 37 MILITARY HOSPITAL | EAR, NOSE AND THROAT DEPARTMENT | AUDIOLOGY UNIT 19