Chronic balance disorders after acoustic neuroma surgery: assessment of gravitational vertical perception

Acta Oto-laryngologica
Hamlet SuárezAlejo Suárez

Abstract

The head tilt response (HTR) test performed in a group of patients with chronic dizziness after acoustic neuroma surgery showed alterations in the gravitational vertical perception (GV). The assessment of the accuracy in the GV through the HTR test in patients with long-term balance disorders after acoustic neuroma surgery. The HTR was performed in two groups of patients that had undergone acoustic neuroma surgery: six uncompensated patients (UPs) who maintained vestibular symptoms 1 year after surgery and two compensated patients (CPs) without vestibular symptoms. Twelve healthy control adults were also tested (control group, CG). Three parameters were measured in the HTR test: steady-state error (SSE), rise time (TRS), and mean energy of the error signal per step (MEE). The UP group showed higher values for the TRS and MEE parameters compared with the CG (p < 0.05) when performing the HTR test to the side of the lesion and to the contralateral side, while the SSE only showed significant higher values when the patient estimated the GV towards the side of the lesion. The two patients in the CP group did not have differences in the three parameters assessed when compared with the CG.

References

Oct 20, 2006·Acta Oto-laryngologica·Anna HafstromMans Magnusson
Oct 20, 2007·Otology & Neurotology : Official Publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology·Davide TufarelliMario Sanna
Aug 5, 2008·Journal of Neurology, Neurosurgery, and Psychiatry·C Parietti-WinklerPh P Perrin
Aug 6, 2008·Clinical Rehabilitation·Luc VereeckPaul H Van de Heyning
Jul 4, 2009·Journal of Neurology, Neurosurgery, and Psychiatry·F TjernströmM Magnusson
Sep 10, 2010·Journal of Vestibular Research : Equilibrium & Orientation·Dario GeisingerHamlet Suarez
Nov 15, 2011·Acta Oto-laryngologica·Hamlet SuárezGonzalo Sotta
Jan 16, 2013·Acta Oto-laryngologica·Angel Batuecas-CaletrioNicolas Perez-Fernandez
Aug 15, 2013·Acta Oto-laryngologica·Daniele BernardeschiOlivier Sterkers

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