We undertook a preliminary assessment of the efficacy of administering intravenous dexamethasone (DEX) for relieving the nausea and dizziness accompanying vestibular neuritis (VN).
Between November 2013 and October 2014, 26 patients with VN were prospectively enrolled in this study. The patients were randomly assigned to treatment with a combination of 20 mg/d of intravenous metoclopramide, 100 mg of oral dimenhydrinate, and 5 mg/d of intravenous DEX or 20 mg/d of intravenous metoclopramide, 100 mg of oral dimenhydrinate, and intravenous normal saline as a placebo therapy. Patients’ subjective assessments of the severity of their nausea and dizziness were recorded using a visual analog scale on the day of admission and 2 days, 3 days, 1 month, and 3 months thereafter. Bedside examinations consisted of spontaneous nystagmus (SPN) assessment, the head shaking nystagmus test, and the head impulse test, which were performed at every follow-up visit.
The severity of nausea and dizziness was significantly reduced over time (both P < 0.05). However, there was no significant effect of DEX injection on the severity of nausea or dizziness (P > 0.05). The presence of SPN was solely associated with nausea (hazard ratio = 3.34; 95% CI, 1.85–6.02).
The administration of intravenous DEX did not relieve nausea or dizziness any better than a placebo treatment. However, further research is required to confirm whether there is a dose-dependent effect of DEX on the control of nausea or dizziness in VN.
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Published online: October 13, 2015
Accepted: August 25, 2015
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