Residual dizziness after a successful canalith repositioning procedure may be caused by persistent utricular dysfunction.

The revised FVEMP protocol using a 500 Hz tone burst stimulus and normalized amplitudes was defined as positive when IR exceeded 14.2% or when a biphasic wave could be detected after furosemide administration in cases without a detectable biphasic wave before administration.

The nystagmus had resolved within a week in 70% and within 30 days in 89% of the patients. The recurrence rate was 33%. The subjects did not have a history of alcohol intake, head trauma, or vestibular neuritis.

No abstract

No abstract