Is regression gain or instantaneous gain the most reliable and reproducible gain value when performing video head impulse testing of the lateral semicircular canals?

Background: Several different video Head Impulse Test (vHIT) systems exist. The function of each individual semicircular canal (SCC) may be determined by performing this test. All vHIT systems provide information about the function of the vestibular ocular reflex by means of two modalities: SACCADES and GAIN.

Are gain values significantly altered by manual data selection when performing the video Head Impulse Test (v-HIT) on all six semicircular canals with two different v-HIT systems.

Background: It has not yet been tested whether averaged gain values and the presence of pathological saccades are significantly altered by manual data selection or if data selection only done by the incorporated software detection algorithms provides a reliable data set following v-HIT testing.

Objective: The primary endpoint was to evaluate whether the averaged gain values of all six SCCs are significantly altered by manual data selection with two different v-HIT systems.

Method: 120 subjects with previously neither vestibular nor neurological disorders underwent four separate tests of all six SCCs with either EyeSeeCam® or ICS Impulse®.

Treatment of Benign Paroxysmal Positional Vertigo with the TRV Reposition Chair.

Objectives: The primary objective of this study was to evaluate how successful the reposition of retractable benign paroxysmal positional vertigo (BPPV) was when treating patients with the Thomas Richard Vitton (TRV) reposition chair.

Materials And Methods: This is a prospective clinical trial. A total of 81 BPPV patients who were referred to the tertiary Balance - Dizziness Centre at the Department of Otolaryngology, Head - Neck Surgery and Audiology, Aalborg University Hospital, Denmark were included and analyzed.

Comparison of test results from two separate video head impulse test systems in a cohort of patients diagnosed with a unilateral vestibular schwannoma.

Purpose: Video head impulse testing (vHIT) is a relatively new technology enabling evaluation of vestibular function. The aim of this study was to compare the test results from two separate vHIT systems in a group of patients diagnosed with a unilateral vestibular schwannoma (VS) with regards to sensitivity, specificity and inter-examiner differences.

Methods: Forty-two patients were examined with two separate vHIT systems: EyeSeeCam (system A) and ICS Impulse (system B), by one of two examiners.

Functional Testing of all Six Semicircular Canals with Video Head Impulse Test Systems.

Throughout the last decade, there has been a rapid development of existing test procedures and methods evaluating the human vestibular system. In 2009 and 2013, commercially available video Head Impulse Testing (vHIT) has enabled clinicians to examine the function of all three paired semicircular canals within the vestibular system. The vHIT test has revolutionized vestibular testing and, at many clinics and hospitals around the world, this test is now considered the most important initial test of vertiginous patients.

Intra- and Interexaminer Variability of Two Separate Video Head Impulse Test Systems Assessing All Six Semicircular Canals.

Objective: To evaluate intra- and interexaminer variability of the video Head Impulse Test (v-HIT) when assessing all six semicircular canals (SCCs) of two separate v-HIT systems.

Study Design: Prospective study.

Setting: Department of Otolaryngology, Head and Neck Surgery, Aalborg University Hospital, Denmark.

Early chest tube removal following cardiac surgery is associated with pleural and/or pericardial effusions requiring invasive treatment.

Objectives: Different opinions exist as to when chest tube removal should be performed following cardiac surgery. The aim of this study was to compare early chest tube removal with removal of the tubes in the morning day 1 postoperatively. Primary combined end point was the risk of postoperative accumulation of fluid in the pericardial and/or pleural cavities requiring invasive treatment.