Uncomplicated UTI/RTI outpatient approach

Syndrome-based approach for common outpatient UTI/RTI presentations with stewardship emphasis.

Last reviewed February 7, 2026

Red flags

Sepsis concern, persistent high fever with systemic instability, or escalating respiratory compromise.
Inability to tolerate oral intake, worsening flank pain, or severe dehydration.
Deterioration despite initial management or recurrent symptoms with new risk factors.

Baseline assessment

Confirm syndrome, severity, and host risk factors before selecting testing or treatment.
Distinguish likely self-limited viral illness from bacterial patterns requiring treatment.
Review recent antimicrobial exposure, allergy profile, and medication interactions.

Initial workup

Use focused diagnostics only when results will change treatment decisions.
Reserve the uncomplicated cystitis pathway for eligible nonpregnant adults; culture atypical, recurrent, complicated or nonresolving infections. Pregnancy and upper-tract symptoms require a separate pathway.
Document hydration status, oral intake tolerance, and red-flag symptom screen.

First-line management

Favor guideline-aligned narrow-spectrum choices and shortest effective treatment durations.
Use no antibiotics for uncomplicated viral RTI; delayed prescribing applies only to selected syndromes with reliable follow-up. Do not treat asymptomatic bacteriuria except during pregnancy or before urological procedures involving mucosal trauma.
Provide explicit self-care and re-evaluation instructions to reduce unsafe delays.

Referral triggers

Recurrent complicated infections, atypical course, or repeated treatment failures.
Significant comorbidity or host-risk complexity beyond routine outpatient care.
Need for specialist assessment due to persistent diagnostic or management uncertainty.

References

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