Diagnostic value of Videonystagmography in vertigo patients at Hai Phong International Hospital

Abstract

Objective: To describe the side effects experienced by women using Implanon NXT® and to examine associated factors. Methods: A cross-sectional descriptive study was conducted on 34 patients aged ³18 years presenting with dizziness . All patients underwent a full battery of Videonystagmography tests, including Saccade, Optokinetic, Dix - Hallpike and Caloric tests, between April and June 2025.   Results: The mean age was 55,6 ± 14,0 years; 76,5% of patients were female. The most common etiologies were peripheral vestibular disorders (52,9%), followed by central (26,5%), mixed (14,7%), and unclassified causes (5,9%). Frequent symptoms included spinning vertigo (100%), nausea / vomiting (44,1%), and imbalance (41,2%). Saccade and Optokinetic tests demonstrated high sensitivity in detecting central causes of vertigo, while unilateral reduction Caloric response was more commonly associated with peripheral vestibular disorders (p<0,05).  Conclusion: Videonystagmography is a reliable diagnostic tool in the evaluation of dizziness, especially for distinguishing between peripheral and central vestibular causes. Its application improves diagnostic accuracy, particularly in atypical presentations such as non – posterior canal BPPV of central vertigo with minimal neurological signs.