Lessons from in vitro testing of spinal needles

Summary In vitro testing of spinal needles is intended to identify a best buy, but such tests are not necessarily good indicators of clinical performance and some bench tests appear to conflict with mock clinical assessments. Discrepancies can be explained by examining the role of the hub. The Visua...

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Bibliographic Details
Published in:Anaesthesia 1995-11, Vol.50 (11), p.964-968
Main Authors: LYONS, G., LESSER, P., BEMBRIDGE, M.
Format: Article
Language:English
Subjects:
Anaesthetic techniques, regional
Anesthesia
Anesthesia, Spinal - instrumentation
Anesthesia. Intensive care medicine. Transfusions. Cell therapy and gene therapy
Anesthesia: equipment, devices
Biological and medical sciences
Equipment Design
Humans
Medical sciences
Needles
Rheology
spinal
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Description
Summary:Summary In vitro testing of spinal needles is intended to identify a best buy, but such tests are not necessarily good indicators of clinical performance and some bench tests appear to conflict with mock clinical assessments. Discrepancies can be explained by examining the role of the hub. The Visual Probability Test, which assesses the needle as a complete unit, would appear to be more useful than the more complex measurements of shaft flow. Not all needle manufacturers use the same gauge, creating confusion when comparisons are made. Packaging frequently fails to give adequate information. Changes in hub design could permit earlier identification of dural puncture.
ISSN:0003-2409
1365-2044
DOI:10.1111/j.1365-2044.1995.tb05929.x