Related Experiment Video
Updated: Oct 23, 2025
09:44
Neuro-rehabilitation Approach for Sudden Sensorineural Hearing Loss
Published on: January 25, 2016
19.4K
Mitochondrial myopathy and sensorineural hearing loss: case study.
Renata da Silva1, Marilia Rodrigues Freitas de Souza1, Acary Souza Bulle Oliveira2
1Departamento de Fonoaudiologia, Universidade Federal de São Paulo - UNIFESP - São Paulo (SP), Brasil.
Codas
|August 18, 2021
Summary
L-carnitine deficiency can cause mitochondrial myopathy and hearing loss. Early diagnosis and intervention, including hearing aids and speech therapy, led to successful language development and academic achievement in a patient with muscular lipidosis.
Area of Science:
- Neurology
- Genetics
- Audiology
Background:
- Mitochondrial myopathy, linked to L-carnitine insufficiency, impairs energy production and can cause muscular lipidosis.
- L-carnitine is crucial for transporting fatty acids into mitochondria for energy synthesis.
Observation:
- A 37-year-old female patient (B.D.) was diagnosed with muscular lipidosis and L-carnitine deficiency at age 6.
- She presented with hearing difficulties and inattention, diagnosed as moderate bilateral sensorineural hearing loss.
- The patient utilized behind-the-ear (BTE) and later Completely in Canal (CIC) hearing aids, with speech-language follow-up.
Findings:
- Continuous L-carnitine supplementation (2g/day) was initiated by a neurologist.
- Hearing aid use significantly improved academic performance and communication.
- Despite a slight worsening of hearing thresholds, CIC aids offered better sound localization and high-frequency gain.
Implications:
- Early neurological diagnosis and timely speech-language intervention are vital for managing L-carnitine deficiency.
- Effective audiological management, including appropriate hearing aids, supports language development and educational attainment.
- This case highlights the importance of a multidisciplinary approach in addressing complex metabolic and sensory disorders.
