Increased urinary volumes in symptomatic Ménière's Disease

Area of Science:

• Nephrology
• Otolaryngology
• Clinical Chemistry

Background:

• Meniere's disease (MD) is a disorder of the inner ear.
• Current diagnostic methods for MD can be invasive or lack specificity.
• Understanding urinary volume changes may offer a novel diagnostic approach.

Purpose of the Study:

• To evaluate the measurement of total urinary volume induced by mannitol's osmotic diuretic action.
• To compare urinary volume response in symptomatic MD patients versus healthy controls.

Main Methods:

• A mannitol challenge test was administered to symptomatic MD patients and healthy controls.
• Total urinary volume was measured post-challenge.
• Statistical analysis was performed to compare urinary output between groups.

Main Results:

• Symptomatic MD patients exhibited significantly higher urinary volumes (874.3 ± 302.1) compared to healthy volunteers (361.7 ± 181.6) (p=0.0001).
• The mannitol challenge demonstrated a clear difference in fluid excretion between the groups.

Conclusions:

• Urinary volume measurement after a mannitol challenge is a sensitive indicator for symptomatic Meniere's disease.
• This easy, self-administered method could potentially replace urinary sugar concentration analysis for MD diagnosis.