Calibration & Equipment
1. Calibration and Audiological Equipment.
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2. ABR equipment specification
NHSP does not stipulate which diagnostic ABR system should be used for electrophysiological assessment following screening. Instead NHSP has drawn up a specification detailing various aspects and features required to efficiently record ABRs from babies in order to assist users in the selection and acquisition of equipment. This specification has been extended to the International community and is available from the International Evoked Response Audiometry Study Group (IERASG) website
Of the systems listed in the specification, only systems A to F are available in the UK with technical support.
2. No ABR system meets the specification in all respects. If using the specification to help select equipment for purchase first consider “Essential” features, especially conformance to IEC 60645-7 which requires an objective measurement of residual noise. Also important is being able to select NHSP-recommended test parameters such as rejection level, display aspect ratio etc
3. The specification does not address the issue of data security since this varies from one country to the next. Equipment suppliers should be consulted and asked how their products meet NHS information governance requirements regarding the security of patient data on laptop computers. Encryption is essential. See National guidance. (The files are at the bottom of the page and there is an email for help.)
When consulting local IT departments it should be emphasised that this is a “medical device” and any security measure must not compromise the functionality of the system. For example peer review requirements include being able to write waveform data (PDF or XPS format) to an encrypted usb memory stick for secure emailing via nhs.net.
Queries, comments and suggestions regarding this specification to Guy Lightfoot