Management of Asymptomatic Bacteriuria in Men

Understanding Asymptomatic Bacteriuria

The American Geriatrics Society defines asymptomatic bacteriuria as the presence of bacteria in the urine without specific urinary symptoms 1
The Infectious Diseases Society of America guidelines state that urinalysis and urine cultures should not be performed for asymptomatic individuals 1
The presence of pyuria (4-6 WBCs/high-power field) alone is not an indication for antibiotic treatment when symptoms are absent 1, 2
Both bacteriuria and pyuria can commonly occur together without representing a true infection requiring treatment 1

UTI requiring treatment is defined by BOTH presence of urinary symptoms (dysuria, frequency, urgency, new/worsening incontinence) and significant bacteriuria with a uropathogen like E. coli 1
The minimum laboratory evaluation for suspected UTI should include urinalysis for leukocyte esterase and nitrite levels, microscopic examination for WBCs, and urine culture with antimicrobial susceptibility testing (only if pyuria or positive leukocyte esterase/nitrite is present) 1

Treating asymptomatic bacteriuria contributes to development of antimicrobial resistance, risk of Clostridium difficile infection, unnecessary medical expenses, and potential drug toxicity 3

If the patient develops symptoms of UTI (fever, dysuria, frequency, urgency), obtain a proper urine specimen for culture before starting antibiotics, and choose empiric antibiotics based on local resistance patterns, then adjust based on culture results 1, 2

Avoid ordering urine cultures for asymptomatic patients 4
Do not treat based solely on urine odor or cloudiness in the absence of symptoms 2