Clinical Nystagmus Characteristics - Distribution of Intensity Components in Acute Vertigo Patients

45 patients with subjective acute or recurrent vertigo underwent VNG. The values of frequency and SPV were determined and evaluated if spontaneous nystagmus (SPN) was present. In the cohort of patients, 64% were diagnosed with neuropathia vestibularis (NV), 27% had another ENT diagnosis (vestibular schwannoma, zoster oticus, M. Menière, BPPV), and 9% had a neurological disease. SPN was detected in 82.2% of cases with VNG and in 80% of cases with Frenzel glasses. The frequency of the SPN in these patients was in the low range (<1/s) in 54%, in the medium range (1-2/s) in 32%, and in the high range (>2/s) in 14%, with a mean value of 1.05/s. GLP was distributed among values below 5°/s in 43%, between 5-15°/s in 35%, and >15°/s in 22%, the mean value was 8.82°/s. A large proportion of the patient cohort showed low-frequency SPN with low SPV, which may complicate subjective diagnosis. Therefore, an instrument-based diagnosis is reasonable. However, patients with NV in particular showed high values for frequency and SPV. A larger cohort is needed to establish a meaningful normal distribution.

Elena Schulte, Sophia Reinhardt, Christian Hartmann, Joshua Schmidt, Jonas Schneider, Michael Leuschel, Christiane Schüle and Jörg Schipper. (2023). "Clinical Nystagmus Characteristics - Distribution of Intensity Components in Acute Vertigo Patients" Laryngo-Rhino-Otologie 102, 94th Annual Meeting German Society of Oto-Rhino-Laryngology, Head and Neck Surgery e. V.. https://www.thieme-connect.de/products/ejournals/abstract/10.1055/s-0043-1766830