Comparison of the video head impulse test with the caloric test in patients with sub-acute and chronic vestibular disorders

Journal of Clinical Neuroscience : Official Journal of the Neurosurgical Society of Australasia
Anne BurstonMark Weatherall

Abstract

The aim of this prospective register-based study was to compare video Head Impulse Tests (vHIT) with caloric tests on 173 patients assessed by a tertiary Neurology referral centre who had been referred for investigation of dizziness or vertigo and whose symptom duration was one month or longer. Abnormal vHIT was defined as angular velocity gain (peak eye velocity/peak head velocity) less than 0.79 at 80 ms and 0.75 at 60 ms, which was two standard deviations below our institutions' lower limit of normal; together with refixation saccades. Abnormal bi-thermal caloric testing defined unilateral hypofunction as a 25% difference using Jongkee's formula and bilateral hypofunction was defined by the sum of the peak slow phase velocities over the four irrigations being <20°/s. Sixty patients had abnormal results on one or both tests, of whom 51 had unilateral and nine bilateral hypofunction. With caloric testing considered as the gold standard, the sensitivity (95% CI) of the vHIT was 18/52, 34.6% (22.0-49.1), and the specificity (95% CI) was 113/121, 93.4% (87.4-97.1). However vHIT was more sensitive in the nine patients with bilateral hypofunction with 100% abnormal vHIT results while only 4/9, 44% had abnormal caloric results. In c...Continue Reading

Citations

Jul 22, 2018·Current Opinion in Otolaryngology & Head and Neck Surgery·Rachael Krager
Nov 22, 2019·European Archives of Oto-rhino-laryngology : Official Journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : Affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery·Siriporn LimviriyakulSuvajana Atipas
Sep 29, 2020·Ear, Nose, & Throat Journal·Zeynep Onerci Altunay, Haluk Ozkarakas
Mar 2, 2021·Brazilian Journal of Otorhinolaryngology·Maria Gabriela Bonilha VallimCarlos Takahiro Chone
Apr 22, 2020·European Annals of Otorhinolaryngology, Head and Neck Diseases·S SinnoG Dumas
May 21, 2021·Clinical Neurophysiology Practice·Dario Andrés YacovinoMarcello Cherchi
Jul 1, 2021·Journal of Neurology·Miranda MorrisonGeorgios Mantokoudis

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