Evaluation and Empiric Treatment of Dysuria
For women with uncomplicated dysuria (frequency, urgency, suprapubic pain, no vaginal discharge), diagnose clinically without urine testing and treat empirically with first-line agents: fosfomycin 3g single dose, nitrofurantoin 100mg twice daily for 5 days, or pivmecillinam 400mg three times daily for 3-5 days 1.
Women (Non-Pregnant)
Clinical Diagnosis
- Uncomplicated cystitis can be diagnosed with high probability based on dysuria, frequency, urgency, and absence of vaginal discharge—no urine testing needed 1.
- If vaginal discharge is present, evaluate for vaginitis instead 1.
- In elderly women, genitourinary symptoms are often unrelated to cystitis, so maintain higher suspicion for alternative diagnoses 1.
When to Obtain Urine Culture
Obtain urine culture only in these specific situations 1:
- Suspected pyelonephritis (fever, flank pain, costovertebral angle tenderness)
- Symptoms not resolving or recurring within 4 weeks after treatment
- Atypical presentation
- Pregnancy
First-Line Empiric Treatment 1
- Fosfomycin trometamol: 3g single dose
- Nitrofurantoin: 100mg twice daily for 5 days
- Pivmecillinam: 400mg three times daily for 3-5 days
Alternative Agents (if local E. coli resistance <20%) 1
- Cephalosporins (e.g., cefadroxil): 500mg twice daily for 3 days
- Trimethoprim: 200mg twice daily for 5 days
- Trimethoprim-sulfamethoxazole: 160/800mg twice daily for 3 days
Non-Antibiotic Option
For mild-to-moderate symptoms, symptomatic therapy with ibuprofen may be considered as an alternative to antibiotics after patient discussion 1.
Treatment Failure
If symptoms persist or recur within 2 weeks, obtain urine culture with susceptibility testing and retreat with a different agent for 7 days 1.
Men
Evaluation
Men with dysuria require more thorough evaluation than women 2:
- In men <35 years: consider sexually transmitted organisms (Chlamydia trachomatis)
- In men >35 years: coliform bacteria predominate, often secondary to benign prostatic hyperplasia
- Digital rectal examination to assess prostate 1
- Urine culture should be obtained
Empiric Treatment 1
Trimethoprim-sulfamethoxazole: 160/800mg twice daily for 7 days (note the longer duration compared to women)
- Fluoroquinolones can be used based on local susceptibility patterns
- Treatment duration is 7 days minimum, not the 3 days used in women
Pregnant Women
Screening and Diagnosis
Screen for and treat asymptomatic bacteriuria in pregnancy with standard short-course treatment or single-dose fosfomycin 1. This is one of the few situations where asymptomatic bacteriuria requires treatment.
When Symptomatic
- Always obtain urine culture 1
- Use ultrasound or MRI (not CT) if imaging needed to avoid fetal radiation 1
Empiric Treatment
- Fosfomycin trometamol: 3g single dose 1
- Nitrofurantoin: 100mg twice daily for 5 days (avoid in first and last trimester per some sources) 1
- Cephalosporins: 500mg twice daily for 3 days
- Avoid trimethoprim in first trimester 1
- Avoid trimethoprim-sulfamethoxazole in last trimester 1
- Treatment duration: 7-10 days (longer than non-pregnant women) 3
Children
The provided guidelines focus primarily on adult populations. For pediatric UTIs 4:
- Obtain urine culture before treatment
- Empiric treatment should be based on local resistance patterns
- Nitrofurantoin is reasonable for uncomplicated cystitis
- Ceftriaxone for those requiring intravenous therapy
- Duration and dosing must be weight-based and age-appropriate
Critical Pitfalls to Avoid
Do NOT treat asymptomatic bacteriuria in non-pregnant women, elderly patients, diabetics, or those with chronic catheters—this increases resistance without benefit 1.
Do NOT use fluoroquinolones as first-line for uncomplicated cystitis—reserve them for situations where other agents cannot be used due to resistance concerns and collateral damage 5.
Do NOT use nitrofurantoin, fosfomycin, or pivmecillinam for pyelonephritis—insufficient data for upper tract infections 1.
Do NOT assume elderly confusion or falls are due to UTI—genitourinary symptoms in elderly women are often unrelated to actual infection 1.
Do NOT obtain routine post-treatment cultures in asymptomatic patients—only if symptoms persist or recur 1.