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[Dichotic digit test. Case]
Franz Zenker Castro1, Rafael Fernández Belda, José Juan Barajas de Prat
1Fundación Canaria Dr. Barajas para la Prevención e Investigación de la Sordera. Santa Cruz de Tenerife. España. franz@clinicabarajas.com
Acta Otorrinolaringologica Espanola
|December 17, 2008
Summary
This case study highlights a 71-year-old experiencing hearing difficulties despite hearing aids. Audiological tests revealed a Central Auditory Processing Disorder, impacting speech comprehension.
Area of Science:
- Audiology
- Neuroscience
- Otolaryngology
Background:
- Sensorineural hearing loss (SNHL) is a common condition affecting many older adults.
- Hearing aid fittings aim to improve audibility and speech understanding.
- Challenges in speech perception, especially in noisy environments, can persist despite amplification.
Observation:
- A 71-year-old female with bilateral SNHL presented with limited benefit from bilateral hearing aids.
- The patient reported significant difficulties understanding speech amidst background noise.
- Standard otolaryngology examination revealed no abnormalities.
Findings:
- Audiological evaluation confirmed bilateral SNHL with moderate hearing loss (51 dB HL right, 50 dB HL left).
- The Dichotic Digit Test, administered under divided and focused attention, indicated deficits consistent with Central Auditory Processing Disorder (CAPD).
Implications:
- This case underscores the importance of considering CAPD in patients with unexplained difficulties in speech perception.
- Central Auditory Processing Disorder may limit the effectiveness of traditional hearing aid amplification.
- Further diagnostic assessment beyond pure-tone thresholds is crucial for identifying and managing CAPD.
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