What diagnostic method is considered the gold standard for evaluating Meniere disease?

The gold standard for evaluating Meniere disease is transtympanic electrocochleography. This diagnostic method measures the electrical potentials generated in the inner ear, specifically the cochlea, in response to sound. It provides direct information about the function of the cochlea and can help identify abnormalities that are characteristic of Meniere disease, such as changes in the endolymphatic potential levels.

In contrast, while an audiogram is useful for assessing hearing loss, it does not provide the detailed functional information about the inner ear needed for a definitive diagnosis of Meniere disease. A CT scan of the inner ear can rule out other structural abnormalities but does not assess function. Vestibular testing through VNG can evaluate balance and vestibular function but is not specific for diagnosing Meniere disease. Therefore, transtympanic electrocochleography is the most effective and comprehensive method to diagnose this condition.