| Laboratory testing of the Pressio intracranial pressure monitor. | |
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MedLine Citation:
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PMID: 18580814 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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OBJECTIVE: The Sophysa Pressio (Sophysa Ltd., Orsay, France) is a new intracranial pressure monitoring system. This study aimed to evaluate its accuracy and compare it with the popular Codman intracranial pressure transducer (Codman/Johnson & Johnson, Raynham, MA) in vitro. METHODS: A computerized rig was used to test the Pressio and Codman transducers simultaneously. Properties that were tested included drift over 7 days, the effect of temperature on drift, frequency response, the accuracy of measurement of static and pulsatile pressures, and connectivity of the system. RESULTS: Long-term (7 d) relative zero drift was less than 0.05 mmHg. The temperature drift was low (0.3 mmHg/207C). Absolute static accuracy was better than 0.5 mmHg over the range of 0 to 100 mmHg. Pulse waveform accuracy, relative to the Codman transducer, was better than 0.2 mmHg over the range of 1 to 20 mmHg. The frequency bandwidth of the Pressio transducer was 22 Hz. The Pressio monitor can transmit data directly to an external computer without the use of a pressure bridge amplifier. CONCLUSION: The new Pressio transducer proved to be accurate for measuring static and dynamic pressure during in vitro evaluation. |
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Authors:
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David Allin; Marek Czosnyka; Zofia Czosnyka |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Neurosurgery Volume: 62 ISSN: 1524-4040 ISO Abbreviation: Neurosurgery Publication Date: 2008 May |
Date Detail:
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Created Date: 2008-06-26 Completed Date: 2008-08-12 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7802914 Medline TA: Neurosurgery Country: United States |
Other Details:
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Languages: eng Pagination: 1158-61; discussion 1161 Citation Subset: IM |
Affiliation:
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UK Shunt Evaluation Laboratory and Academic Neurosurgical Unit, Addenbrooke's Hospital, Cambridge, England. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Intracranial Pressure* Laboratories Monitoring, Physiologic / instrumentation* Research Design Transducers, Pressure |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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