Routine Use of the Crystal Device Integrity Testing System in Pediatric Patients

2006 ◽  
Vol 17 (10) ◽  
pp. 722-732 ◽  
Author(s):  
Daniel L. Monin ◽  
Ken Kazahaya ◽  
Kevin H. Franck
Keyword(s):  
Cochlear Implant ◽  
Common Ground ◽  
Pediatric Patients ◽  
Rapid Assessment ◽  
Clinical Treatment ◽  
Testing System ◽  
Integrity Testing ◽  
The Future ◽  
Integrity Tests ◽  
Abnormal Results

Crystal Device Integrity Testing System (CITS), the first commercially available testing system of its type, allows rapid assessment of cochlear implant function by measuring averaged electrode voltages—the scalp-recorded fields generated by electrode currents. We describe our experience performing routine integrity tests on 44 pediatric cochlear implant patients using the CITS. We present our findings focusing on the monopolar and common ground scans to provide a framework from which CITS scans can be evaluated in the future. We also describe selected cases in which abnormal results using the CITS influenced clinical treatment, demonstrating the utility of performing routine integrity tests.

scholarly journals The Intra-Cochlear Impedance-Matrix (IIM) test for the Nucleus® cochlear implant

2015 ◽  
Vol 60 (2) ◽  
Author(s):  
Matthias Hey ◽  
Britta Böhnke ◽  
Norbert Dillier ◽  
Ulrich Hoppe ◽  
Gunnar Eskilsson ◽  
...  
Keyword(s):  
Cochlear Implant ◽  
Common Ground ◽  
Impedance Matrix ◽  
Normalization Procedure ◽  
Integrity Testing ◽  
Stimulation Level ◽  
Impedance Data ◽  
Electrode Voltage ◽  
Function Test ◽  
New Algorithms

AbstractTo describe the principles and operation of a new telemetry-based function test for the NucleusThe IIM test measures bipolar impedances between all electrode pairs and employs a normalization procedure based on common ground impedances in order to identify abnormal current paths among electrodes. Six European clinics collected IIM data from a total of 192 devices.Reproducibility was high between initial and repeat measurements. The normative analysis demonstrated narrow ranges among devices after normalization of impedance data. The IIM is able to identify abnormal current paths that are not evident from standard impedance telemetry and may otherwise only be found utilising average electrode voltage measurements (AEV).The IIM test was found to be straightforward to perform clinically and demonstrated reproducible data with narrow ranges in normally-functioning devices. Because this test uses a very low stimulation level the IIM test is well suited for children or multiply handicapped CI users who cannot reliably report on their auditory percepts. The new algorithms show potential to improve implant integrity testing capabilities if implemented in future clinical software.

Damage Assessment of Historic Earthen Sites after the 2007 Earthquake in Peru

2010 ◽  
Vol 133-134 ◽  
pp. 665-670 ◽  
Author(s):  
N. Claudia ◽  
B. Cancino
Keyword(s):  
Multidisciplinary Team ◽  
Damage Assessment ◽  
Rapid Assessment ◽  
Future Design ◽  
The Future ◽  
Earthen Buildings

The Pisco earthquake of August 15, 2007 resulted in 519 deaths and 1366 injured, with a total of 650,000 people affected and 80,000 dwellings damaged. Preliminary reports indicated that significant earthen sites were damaged. A few months after the earthquake a rapid assessment to better understand the failure of the affected sites was performed by a multidisciplinary team convened by the Getty Conservation Institute (GCI) in response to a request from the Instituto Nacional de Cultura del Perú (INC). This paper presents the highlights of that evaluation and its implications for the future design and retrofit of earthen buildings.

scholarly journals Rapid human-driven undermining of atoll island capacity to adjust to ocean climate-related pressures

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Virginie K. E. Duvat ◽  
Alexandre K. Magnan
Keyword(s):  
Rapid Assessment ◽  
Great Majority ◽  
Adaptation Strategies ◽  
Future Research ◽  
Tipping Points ◽  
Human Disturbances ◽  
Ocean Climate ◽  
The Future ◽  
Response Capacity ◽  
Natural Response

Abstract Most studies addressing the future of atoll islands focused on ocean-climate drivers of risk, especially sea-level rise, and disregarded the role of local human disturbances. However, the future habitability of these countries will critically depend on the response of inhabited and exploited islands to ocean-climate pressures. Here, using the Maldives as a case study and based on a database including 608 islands (representing 56.8% and 86.0% of the country’s land area and population, respectively), we assess the influence of human disturbances on island natural response capacity over the last decade. We show that over the last decade, island change was rapid and primarily controlled by anthropogenic drivers. The great majority of inhabited and exploited islands now exhibit an altered-to-annihilated capacity to respond to ocean-climate pressures, which has major implications for future research and adaptation strategies. First, future studies should consider not only climate, but also anthropogenic tipping points (in contrast to climate tipping points). Second, adaptation strategies must be implemented without delay, despite climate uncertainties, in order to contain any additional detrimental path-dependency effects. This study provides critical information for better addressing the attribution issue under climate change, and a replicable rapid assessment frame.

Experiences in integrity testing ultrafiltration membranes at a large potable water treatment works

2003 ◽  
Vol 3 (5-6) ◽  
pp. 1-7
Author(s):  
S. Oxtoby
Keyword(s):  
Water Treatment ◽  
Membrane Filtration ◽  
Membrane System ◽  
Primary System ◽  
Secondary System ◽  
Ultrafiltration Membranes ◽  
Integrity Testing ◽  
Particulate Loads ◽  
Integrity Tests ◽  
The Uk

The Clay Lane Water treatment works of Three Valleys Water, in the south east of England, is currently the world’s largest ultrafiltration works with a capacity of 160 Ml/d. It utilises ultrafiltration membranes constructed as hollow fibres with a number of membrane elements in a pressure housing. The plant has been operating since spring 2001. The decision to install the system was made in anticipation of the introduction of tighter regulations on Cryptosporidium in water supplies in the UK. Once a decision was made to proceed with a membrane system the ability to monitor the integrity of the system and to repair problems became a crucial design parameter that was a critical part of membrane selection. The need to include a system affected the design of the filtration units offered by manufacturers. The available systems for integrity testing are reviewed and the reasons for selecting the system adopted are discussed. These include particle counting and the dosing of test particulate loads. The different forms of air passage integrity tests are discussed and the displaced air flow system used is described. Once a failure has been detected it must be traced so that the fault can be repaired. This procedure is described together with the techniques of pin repair of damaged fibres. At Clay Lane and other membrane filtration sites the backwash water from membrane cleaning is recovered using a secondary membrane system. Currently the secondary system operates in the same integrity testing regime as the primary system and the secondary filtrate is returned ahead of the primary membrane system. The relative merits of this system, or the alternative of adding the recovered water to the filtrate are discussed.

Integrity Testing in Poland — Issues, Experience and Practical Comments

2016 ◽  
Vol 8 (2) ◽  
pp. 67-84
Author(s):  
Piotr Hac
Keyword(s):  
Great Britain ◽  
The United States ◽  
Public Institutions ◽  
Personal Knowledge ◽  
The Czech Republic ◽  
Integrity Testing ◽  
The People ◽  
The World ◽  
Integrity Tests ◽  
Similar Solutions

The aim of this article is to present a subject not widely known in Poland: the tool known as Integrity Testing that is in place in several countries of the world (including countries in Europe). It is used to fight corruption and irregularities in the functioning of public institutions and means the possibility of anti-corruption authorities creating a false corruption situation in order to verify an officer’s behaviour. The motives for the inception of the procedure, its assumptions and the basic conditions of use are presented,and the terminology used is also explained. It shows the positive, preventive aspects of the use of tests and the need for a professional approach to these on the part of the people implementing and performing them. For the purposes of this article the tests described have been divided into four main groups and the criteria adopted have been explained. A comparative analysis of integrity testing as used by institutions in the United States, Australia, Great Britain, Romania and the Czech Republic is also carried out, specifying the key differences between these systems, including how to implement procedures and the possible use of the results. Specific figures are given concerning the number of tests carried out in some countries and their effectiveness. The assumptions used in integrity tests are also compared to current similar solutions in the anti-corruption law operating in the Polish police (Article 19 of the Police Act). Also outlined are the main problems requiring a response before any possible start of work on the implementation of integrity tests in Poland. At the same time it is noted that in the years 2007–2008 the Polish Police worked on a similar legal solution, but ultimately this was not accepted. The article is based on the author’s personal knowledge and experience resulting in a highly pragmatic picture of the issues presented.

Sign in / Sign up

Export Citation Format

Share Document