Laboratory diagnosis of urinary tract infections in adult patients by gram stain

ELSHUKRI, FATMA (2022-09-12)

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Urinary tract infection (UTIs) are among the most common bacterial infection and account for a significant part of the workload in clinical microbiology laboratories . Enteric bacteria (Echerichia coli ) remain the most frequent cause of UTIs. Most important is the increase in resistance to some antimicrobial agent ,particularly the resistance to trimethoprime _ sulfamethoxazole seen in E.coli . Physicans distinguish UTIs from other diseases that have similar presentations among the diagnostic test , urinalysis is useful mainly for excluding bacteruria , urin culture and Gram stain are necessary for out patient who have recurrent or complicated UTIs as well as for inpatients who develop UTIs. The sensitivity and specificity and specificity of the urinary Gram stain to detect E.coli were 80% and 83 % our finding reveled that neither method of urine screen should substitute for urine culture and Gram stain in the symptomatic patients .

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