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[Acute hearing loss caused by arterial hypotension]
U H Ross1, G Brademann, E Lehnhardt
1Universitäts-HNO-Klinik Freiburg.
HNO
|September 1, 1993
Summary
Arterial hypotension, a condition of low blood pressure, is linked to sudden low-frequency hearing loss. This study monitored blood pressure in 81 patients, finding a higher incidence of hearing impairment in those with hypotension.
Area of Science:
- Otolaryngology
- Cardiology
- Audiology
Context:
- Sudden hearing loss (SHL) is an otologic emergency with various potential causes.
- Clinical observations suggest a link between arterial hypotension and SHL, particularly affecting lower frequencies.
- Noninvasive 24-hour ambulatory blood pressure monitoring (ABPM) offers a method to investigate this association.
Purpose:
- To investigate the hypothesis of a causal relationship between arterial hypotension and sudden, low-frequency hearing loss.
- To assess the prevalence of circadian blood pressure profiles in patients diagnosed with sudden inner ear hearing loss.
- To determine if arterial hypotension is a significant risk factor for sudden hearing impairment.
Summary:
- Eighty-one patients with audiologically and/or MRI-confirmed sudden inner ear hearing loss underwent 24-hour ABPM.
- Patients with arterial hypotension exhibited a significantly higher incidence of low-frequency hearing loss (up to 30 dB HL) compared to normotensive or hypertensive individuals.
- The findings suggest arterial hypotension may be a probable cause of sudden hearing impairments, classifying it as a circulatory disorder with management implications.
Impact:
- Highlights the importance of considering circulatory disorders, specifically arterial hypotension, in the differential diagnosis of sudden hearing loss.
- Suggests that blood pressure management may play a role in the treatment and prevention of certain types of sudden hearing loss.
- Emphasizes the utility of ABPM in evaluating patients with unexplained sudden hearing loss.