Management of Recurrent UTIs in Women with Post-Coital Infections

Diagnostic Confirmation and Initial Assessment

The American Urological Association defines recurrent UTIs as ≥2 culture-positive UTIs in 6 months or ≥3 in one year 1, 2
A thorough history and physical exam should assess for complicating factors that may warrant additional testing 1
Confirm eradication of previous UTI with a negative urine culture 1-2 weeks after treatment before starting any prophylactic regimen 3, 4

The American Urological Association recommends maintaining adequate hydration to promote frequent urination 1, 5, 6
Void immediately after sexual intercourse 1, 5, 6
Avoid prolonged holding of urine 1, 5
Avoid sequential anal and vaginal intercourse 1, 5
Avoid disruption of normal vaginal flora with harsh cleansers 1, 5
Control blood glucose if diabetic 1, 5

For women with UTIs clearly linked to sexual activity, post-coital antibiotic prophylaxis is highly effective 1, 2
Take a single dose of antibiotic within 2 hours after sexual intercourse 1, 2
Recommended antibiotics include Nitrofurantoin 50 mg 1, 2, Trimethoprim-sulfamethoxazole 40/200 mg 1, 2, and Trimethoprim 100 mg 1, 2
Duration of prophylaxis should be 6-12 months 1, 2
Antibiotic choice should be based on previous culture results, susceptibility patterns, and patient allergies 1, 4

If patient prefers non-antibiotic alternatives or has contraindications to antibiotics, consider Methenamine hippurate 1 and Lactobacillus-containing probiotics 1, 4
Cranberry products have limited evidence for efficacy in preventing recurrent UTIs 5, 7

Urine culture should be obtained with each symptomatic episode before initiating treatment 2
Do not repeat urine cultures after successful treatment if symptoms have resolved 2
If prophylaxis fails, consider rotating antibiotics every 3 months to reduce development of resistance 1

Avoid treating asymptomatic bacteriuria as this promotes antimicrobial resistance 2
Fluoroquinolones and cephalosporins should be restricted to specific indications due to concerns about resistance 1, 2
Extensive workup (cystoscopy, imaging) is not routinely recommended unless specific risk factors are present 2
If UTIs persist despite prophylaxis, reassess for anatomical abnormalities or other complicating factors 1
Continuous daily antibiotic prophylaxis may be considered if post-coital prophylaxis is ineffective 4