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The impact of empirical management of acute cystitis on unnecessary antibiotic use McIsaac WJ; Low DE; Biringer A; Pimlott N; Evans M; Glazier RArch Intern Med 2002[Mar]; 162 (5): 600-5BACKGROUND: Guidelines for the management of acute cystitis support empirical antibiotic treatment; however, up to half of symptomatic women have negative urine cultures. OBJECTIVE: To determine whether empirical treatment leads to unnecessary antibiotic prescriptions in women with symptoms of acute cystitis. METHODS: A cohort of 231 women (defined as females aged 16 years and older) presenting to family physicians' offices with symptoms of cystitis underwent a standardized clinical assessment, urine dip testing, and culture. Recommendations for urine testing and antibiotic treatment under 3 empirical strategies were compared with observed physician management and a logistic regression model for the outcomes of antibiotic prescriptions, urine culture testing, and unnecessary antibiotics, defined as a prescription where the subsequent urine culture was negative. RESULTS: There were 123 positive urine cultures (53.3%). Physicians prescribed antibiotics to 186 women (80.9%), of whom 74 (39.8%) were culture negative. Unnecessary antibiotic use was similar for 2 guidelines recommending empirical antibiotic treatment without testing for pyuria (41.4% and 40.6%). Treating women with classic cystitis symptoms and pyuria would have decreased unnecessary antibiotic use (26.2%; P =.02) but resulted in fewer women with confirmed urinary tract infection receiving immediate antibiotics (66.4% vs 91.8% usual care; P<.001). A derived prediction model incorporating testing for pyuria and nitrites would also have reduced unnecessary antibiotic use (27.5%; P =.03), but more women with confirmed urinary tract infection would have received immediate antibiotics (81.3%; P =.01). CONCLUSIONS: Empirical antibiotic treatment of acute cystitis in women without testing for pyuria promotes unnecessary antibiotic use. A simple decision rule provides for prompt treatment of infected women while reducing antibiotic overuse and unnecessary urine testing.|*Practice Patterns, Physicians'[MESH]|Acute Disease[MESH]|Adult[MESH]|Aged[MESH]|Aged, 80 and over[MESH]|Algorithms[MESH]|Cystitis/diagnosis/*drug therapy/*urine[MESH]|Drug Utilization[MESH]|Female[MESH]|Humans[MESH]|Logistic Models[MESH]|Middle Aged[MESH]|Prospective Studies[MESH] |