Comparison of a urine chemistry analyser and microscopy, culture and sensitivity results to detect the presence of XXXX in an elective orthopaedic population.

@entity1 @entity281 @entity2648 @entity293
Currently elective orthopaedic @entity1 require a microscopy and culture of urine (MSU) to be performed on admission. Between 70-80% of urine cultures are found to be negative for @entity281 , making this practice costly and time consuming. The purpose of this study was to compare the accuracy of a dip stick urine chemistry analyser (Clinitek 50 machine) with a MSU, to detect the presence of @entity2648 and/or leukocytes in a group of elective orthopaedic surgical @entity1 . methodology: Using a prospective cohort study design all elective orthopaedic @entity1 who met the study criteria were invited to participate. In total 102 @entity1 undergoing total hip or total knee replacement surgery participated. results: Results showed that the prevalence of @entity293 in @entity1 undergoing total knee or hip surgery, was 14%. High specificity and negative predictive values for the detection of bacterial growth by dip stick urine chemical analysis were found, especially when either the presence of @entity2648 or leukocytes was used as an indicator. conclusion: This study has provided valuable baseline data on the accuracy of using photometry techniques as a screening measure, in the detection of UTI, in a sample of orthopaedic @entity1 . While the Clinitek 50 dip stick urine chemistry analyser did not have high sensitivity in identifying those @entity1 with a UTI, it was specific in identifying those @entity1 who did not have an @entity281 . Given the enormous cost in routine screening of these @entity1 and the impact on nursing resources, use of this analyser could have potential nursing resource and financial benefits.
