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Standard operating procedure reduces interoperator variation and improves accuracy when measuring packed cell volume
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Standard operating procedure reduces interoperator variation and improves accuracy when measuring packed cell volume
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Journal Article
Standard operating procedure reduces interoperator variation and improves accuracy when measuring packed cell volume
2019
Overview
ObjectiveTo evaluate whether a standard operating procedure (SOP) for canine packed cell volume (PCV) measurement reduces operator-dependent variation and improves accuracy within a veterinary teaching hospital environment.Materials and methodsClinical staff and final-year undergraduate veterinary students were recruited to perform PCV measurements in blinded duplicate samples. Participants were randomly allocated to perform this with or without an SOP. Participants’ results were compared against a reference, generated by the authors following the World Health Organization guidelines.ResultsThe study population comprised 18 clinical staff and 39 students. Three clinical staff and seven students displayed errors consistent with inaccurate reading, only one of whom had access to the SOP. Five students and two clinical staff had errors attributable to incorrect preparation, with only one having access to the SOP. Interoperator variation was significantly less using the SOP. Using the SOP, 95 per cent of the results were within 0.0125 l/l of the reference value, in comparison with within 0.09 l/l without SOP. Interoperator variation was significantly less in the SOP group (P=0.0025).Clinical significanceUsing the SOP resulted in less variation and more accurate results. This confirms that PCV measurement with an SOP can truly be a ‘waived’ test.
Publisher
BMJ Publishing Group Limited,Blackwell Publishing Ltd
Subject
/ Animals
/ Dogs
/ Ethics
/ Humans
/ PCV
/ Practice Guidelines as Topic
/ SOP
/ standard operating procedure
/ Students
/ Studies
