Publications by authors named "J Kattah"
Article Synopsis
- In patients with unilateral vestibular loss (UVL), vibrations can trigger a response known as vibration-induced nystagmus (VIN), where eye movements are directed toward the affected ear due to imbalances in signals from the vestibular system.
- A study employed a neural network model to hypothesize that the brain could misinterpret head orientation during vibration, leading to additional "virtual" translational effects; this means the angle of the head relative to gravity would affect the VIN response.
- The research confirmed the hypothesis through experiments with three patients, showing the expected patterns of VIN based on head positions, indicating that VIN could help identify subtle vestibular imbalances when other signs are unclear.
Radiographic Horizontal Conjugate Gaze Deviation: Clinical Correlates.
Neurol Clin Pract
February 2025
Article Synopsis
- The review highlights the diagnostic significance of radiographic horizontal conjugate gaze deviation (Rad h-CGD) in identifying various neurologic and vestibular disorders, building on findings from 2003 by Simon et al.* -
- Different clinical correlates of Rad h-CGD were identified, showcasing how the angle of deviation can help localize lesions, while suggesting an algorithm for better interpretation based on past literature and clinical experience.* -
- Although Rad h-CGD is helpful in diagnosing and localizing issues, it cannot solely differentiate between types of lesions, emphasizing the importance of clinical context and noting potential overlaps with conditions like strokes and vestibular syndromes.*
Article Synopsis
- - In patients with acute prolonged vertigo or gait imbalance, the HINTS examination is more effective in diagnosing central causes compared to the graded gait/truncal-instability (GTI) rating system, which has limitations due to varying sensitivity and specificity.
- - A systematic review analyzed data from 18 studies involving 1025 patients and found that while GTI-grade 2/3 provided moderate predictive capability for diagnosing central causes, the HINTS method had significantly higher accuracy.
- - Combining GTI ratings with central nystagmus patterns enhances diagnostic accuracy but still falls short compared to HINTS; however, GTI remains valuable for emergency department use in diagnosing acute imbalance disorders.