Diagnostic Accuracy of Urine Analysis (DR) in Suspicious Cases of Urinary Tract Infections by Taking Urine Culture as Gold Standard
Akhtar Ali, Shahzad Ali, Naresh Kumar Valecha, Saeed Ahmed Khan
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ABSTRACT
Background: Urinary tract infections (UTI) are one of
common clinical condition encountered in various clinical settings. This the
most common infection, typically diagnosed on the basis history and clinical
examination endorsed by urine analysis and culture sensitivity. Timely
diagnosis and treatment are crucial in management. For diagnosis of UTI, Urine
culture is standard, as it provide detail information for urinary pathogens,
but it has certain disadvantages e.g. urine culture is costly, takes longer
time, and up to 60-80% of the results are negative.
Objective: To determine the diagnostic accuracy of
urinalysis (Urine DR) in detection of urinary tract infection (UTI) among
suspected cases of UTI by taking urine culture as gold standard.
Materials And Methods:
This cross sectional study was conducted at study was conducted at
Department of Urology, Jinnah Postgraduate Medical Centre (JPMC) Karachi, from
march 2021 to September 2021.
All patients who
visited to JPMC Karachi and fulfilled the inclusion criteria and were included
in the study after getting Informed consent. All patients were evaluated by
urinalysis and urine culture. The results of urinalyses were recorded and
compared with the results obtained on subsequent urine cultures. All of the
specimens were obtained by the “clean-catch” method. All data and results were
recorded on proforma and used electronically for research purpose.
Results: Mean ± SD of age was 52.6±8.5 years. In
distribution of gender, 60 (53.1%) patients were male while 53 (46.9%) were
female patients. Diagnostic accuracy of urinalysis was 73.45% in diagnosis of
urinary tract infection with sensitivity 76.47%, specificity 72.15% PPV 54.17%
and NPV was found to be 87.69% by using urine culture findings as gold
standard.
Conclusion: It is to be concluded that evaluating of
urinary tract infection (UTI) with urinalysis (Urine DR) did not prove helpful
and comparable to urine culture. Urine culture should be done in each and every
suspected case of UTI.
Keywords: Bacteriuria, Diagnostic Accuracy, Sensitivity,
Specificity, Urinalysis