Publications by authors named "G Mantokoudis"
Objective: We aimed to investigate the effect of adding "rapid decelerations" and "vibrations" during a SemontPLUS maneuver on the dynamics of the inner ear and the success rate of canalolithiasis repositioning.
Methods: We used a previously described upscaled (5×) in vitro model of the posterior semicircular canal of the inner ear to analyze the trajectory of a single and clumped surrogate otolith particle (metallic sphere) during a SemontPLUS maneuver (-60 degrees below earth horizontal) on a repositioning chair (TRV). We compared the angular displacement of these particles with and without the application of "vibrations" or "rapid decelerations" using TRV.
Quantitative in-vitro assessment of a novel robot-assisted system for cochlear implant electrode insertion.
Int J Comput Assist Radiol Surg
October 2024
Article Synopsis
- This study focuses on improving cochlear implant procedures by testing a new robotic tool designed to minimize trauma during the insertion of electrodes, which is crucial for preserving hearing in patients with some remaining inner ear function.
- Using a validated model, the researchers conducted 60 insertions (30 manual and 30 robot-assisted) and found that the robotic method significantly reduced force variation and intracochlear pressure peaks compared to manual techniques.
- The findings suggest that robotic assistance allows for more controlled and consistent insertion speeds, potentially enhancing hearing preservation while indicating that further research is needed to address later stages of the surgery.
Background: Cochlear implants (CI) provide individuals with severe sensorineural hearing loss the opportunity for artificial auditory perception. The standardized documentation of speech intelligibility tests is widespread, while the systematic capture of patient-related outcome measures (PROMs) remains inconsistent.
Methodology: Relevant PROM instruments were evaluated and selected based on the criteria of dissemination, clarity, and relevance, integrated into routine clinical practice, and tested at longitudinal time points.
Article Synopsis
- Physicians can use nystagmus fixation suppression to help diagnose acute vestibular syndrome, but the accuracy of detecting this suppression using simulations by doctors is limited.
- In a study with 20 doctors, their ability to identify changes in nystagmus was tested under different conditions, revealing that both beginners and experienced physicians struggled similarly.
- The results showed that small changes in nystagmus velocity were difficult to detect, especially when the baseline nystagmus was strong, indicating that clinical tests for this condition may benefit from additional technology, like video-oculography.
Objectives: Electrocochleography (ECochG) is increasingly recognized as a biomarker for assessing inner ear function in cochlear implant patients. This study aimed to objectively determine intraoperative cochlear microphonic (CM) amplitude patterns and correlate them with residual hearing in cochlear implant recipients, addressing the limitations in current ECochG analysis that often depends on subjective visual assessment and overlook the intracochlear measurement location.
Design: In this prospective study, we investigated intraoperative pure-tone ECochG following complete electrode insertion in 31 patients.