[A case of sudden hearing loss combined with familial hyperlipidemia]

Hui Zhong1,2, Xiaonan Wu2, Jing Guan2

  • 1Southern Medical University,Guangzhou,510515,China.

Insights

This study details a case of sudden hearing loss linked to familial hyperlipidemia. The findings suggest a potential connection between abnormal lipid metabolism and hearing impairment, highlighting the need for further research.

Area of Science:

  • Cardiology
  • Genetics
  • Otolaryngology

Background:

  • Hyperlipidemia, characterized by elevated blood lipids, is a known risk factor for atherosclerosis.
  • The relationship between abnormal lipid metabolism and sudden hearing loss (SHL) is not well-established.
  • Familial hyperlipidemia represents a significant genetic predisposition to dyslipidemia.

Observation:

  • A case study involving a patient with familial hyperlipidemia presenting with sudden hearing loss.
  • Audiometry revealed intermediate-frequency hearing loss in one ear.
  • Laboratory tests confirmed dyslipidemia, and genetic analysis identified a heterozygous mutation in the APOA5 gene.

Findings:

  • The patient was diagnosed with sudden hearing loss and hypercholesterolemia.
  • The identified APOA5 gene mutation suggests a genetic basis for the observed lipid abnormalities.
  • Pharmacological treatment led to a positive response in the patient's condition.

Implications:

  • This case highlights a potential link between abnormal lipid metabolism, specifically familial hyperlipidemia, and sudden hearing loss.
  • Further investigation into the mechanisms connecting dyslipidemia and auditory dysfunction is warranted.
  • Understanding this connection may lead to novel diagnostic and therapeutic strategies for hearing loss in patients with lipid disorders.

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